1 :01x01 - Pilot

Gil Grissom is the supervisor of the CSI, the forensics unit of the pre-eminent crime lab in the country, second only to the FBI's unit at Quantico. This episode introduces the other members of the cast, including Grissom's boss, Captain Jim Brass; Catherine Willows, a single mother and the number two CSI; and Warrick Brown, a young investigator angling for a promotion to level 3 investigator His chief competition is fellow CSI, Nick Stokes.

Grissom investigates the case of a murder set up to look like a suicide, but discovers very little evidence at the scene. Warrick and Catherine are assigned to the case of drunk man shot to death. Meanwhile, Nick investigates the case of a man drugged and robbed by a prostitute whom he'd picked up.

2 :01x02 - Cool Change

In the aftermath of the Holly Gribbs shooting, Captain Brass is demoted and reassigned as a homicide detective, with Gil getting promoted to full head of the CSI unit. Grissom brings in Sara Sidel, an investigator he knows from San Francisco, and assigns her to the case, much to the displeasure of Catherine, who felt guilty about some things she said to Holly before the shooting, and wanted the case for herself. Grissom and Nick investigate the apparent suicide of a man who, hours before, had won a large casino jackpot. Warrick, who left Holly alone at the scene in violation of standard procedures, is up for suspension as a result, even as he is pressured from the other side by a corrupt judge.

3 :01x03 - Crate 'n Burial

When a woman is kidnapped, Grissom, Nick and Sara take on the case. But in their search for her, they encounter more complcations than expected. Warrick, having narrowly avoided suspension, joins Catherine in investigating the death of a young girl who was killed in a hit and run.

4 :01x04 - Pledging Mr. Johnson

Grissom and Catherine cover a case where a severed leg is found that apparently belongs to a female body recovered from Lake Mead. The woman had a boyfriend who becomes an immediate suspect. Meanwhile, Sara and Nick investigate a fraternity pledging ceremony that turned deadly. Warrick is pressured once again by a crooked judge to compromise key evidence in a case.

5 :01x05 - Friends & Lovers

Grissom and Warrick investigate the death of a young man who is found naked in the desert, but the case becomes more challenging when the cause of death fails to match any obvious reasons. Sara is sent to investigate when a woman who was buried the week before unexpectedly turns up in a dumpster. Catherine and Nick find problems with the story of a classy private school's founder regarding her part in the death of the school's dean.

6 :01x06 - Who Are You?

In a clear violation of protocol, Catherine investigates a case of a rape accusation involving her ex-husband. Warrick and Sara find themselves in an adversarial situation as they hunt for a missing bullet that will either exonerate or indict a patrol officer in a murder investigation. Meanwhile, Grissom and Nick look into the details of a skeleton of a female found in the foundation of a house.

7 :01x07 - Blood Drops

The full team looks into a mass murder in which a teenager and her younger sister are the only survivors of the brutal murders of the rest of their family. The team at first believes that the murders were some form of cult murders, but as they dig deeper, the true events become increasingly disturbing.

8 :01x08 - Anonymous

Three months ago (in the pilot episode), Royce Harmon was murdered and his killer rigged the scene to make it appear as a suicide. Another murder has been committed, with similar evidence, and the killers' extensive knowledge of forensics has left Grissom and his crew bewildered. Meanwhile, Warrick and Nick deal with a case of a man who drove over a cliff in his car and is now unconscious.

9 :01x09 - Unfriendly Skies

When a passenger is found dead on a flight to Las Vegas, the investigation falls upon Grissom and his CSI team. The team must sort through all the detailed interviews with the passengers, along with the collected physical evidence in order to discover the answers.

10 :01x10 - Sex, Lies and Larvae

A body covered in bugs is found abandoned in the desert, leaving Grissom and Sara to figure out where it came from and who killed the victim. Warrick and Catherine investigate the theft of valuable pieces of art while Nick is assigned to uncover the truth about why a missing woman's car is found at a bus station. Later, Warrick is suspended when he is suspected of gambling while on duty.

11 :01x11 - I-15 Murders

A woman is kidnapped from a supermarket. While investigating, Grissom finds evidence that suggests that five other women have already been killed, creating a race to find out who the kidnapper is. After being caught on duty in a casino and suspended, a reinstated Warrick is paired up with Sara for a robbery-murder case. Sara is concerned with Warrick's devotion to duty as well as his clear gambling problem. Meanwhile, Nick is asked for help by the prostitute he befriended in the pilot episode, after she has problems with a hotel's security staff.

12 :01x12 - Fahrenheit 932

A man who is on trial for the arson and murder of his wife and child implores Grissom to help prove his innocence. Grissom agrees to look into it despite the fact that this puts him at odds with Ecklie, who performed the original investigation. Catherine and Nick look into the underbelly of gambling after a young man is shot and killed in his car.

13 :01x13 - Boom

After a bomb explodes in an office building and several people are injured and one is killed, the CSIs first suspect is a security guard who left only minutes before, and has amateur experience with bomb making. Nick helps his prostitute friend from the pilot episode, who then seduces him, but winds up dead the next morning, making Nick a prime suspect. Worse still, Ecklie winds up with the case.

14 :01x14 - To Halve and to Hold

After a human bone is found in the desert by a dog playing fetch with its owner, Gil and Catherine have to search across a large area for clues about the body, which leads to an identification. When his wife is approached, she insists that her husband is away at a local store. Warrick and Sara, at the same time, investigate the death of a male stripper who was working a bachlorette party that appears to have gotten way out of hand. Clues point to a bridesmaid as the culprit.

15 :01x15 - Table Stakes

When a woman winds up floating in the pool at a swanky fundraiser with many local VIPs, the CSIs investigate, but must tread lightly for political reasons, though there is also pressure for a quick solution for the same reasons. The owner of the house where the fundraiser was held is out of town, and suspicions falls on the hosts of the party, a couple who is house-sitting for her. Warrick is sent to look into an apparent mob-style hit, where the victim, shot in the forehead in a hotel's glass elevator, was left with a quarter covering the entry wound.

A woman winds up dead at a classy fundraiser and the CSIs are sent to investigate. The owner of the house is out of town, turning the suspicion to the couple house-sitting for the owner. Meanwhile, Warrick investigates a murder committed in a glass elevator. After some investigation, Warrick discovers that the victim had a professional hit put out on him.

16 :01x16 - Too Tough to Die

After a woman is kidnapped, raped, beaten, and shot, then left for dead in a comatose state, it falls upon Sara to identify her. As she works on the case, she develops an appreciation for the woman's strength and character the more she learns. Catherine and Warrick have a murder case dumped in their laps when the assigned CSI on the case quits. It falls to them to understand how the story of the accused and the victim's wife are so at odds. Catherine discovers that her ex-husband Eddie has taken out a second mortgage on their house, still in both their names, without her permission.

17 :01x17 - Face Lift

A body suffering from head trauma found one morning in a store, near the safe, appears to have been the result of an interrupted robbery. A fingerprint found at the store connects the robbery in some way to a young girl kidnapped twenty years before. Sara and Warrick find themselves assigned to investigate a woman who burned to death while the house around her was hardly affected. Sara claims it's a case of mythical "spontaneous human combustion", while Warrick insists there is a simpler explanation. They compete to find the true answer.

18 :01x18 - $35K O.B.O.

When a couple celebrating their anniversary is killed in front of the restaurant they have just left and their car is stolen, the CSIs investigate. The investigation is complicated when it begins to rain and most of the crime scene evidence is destroyed. When the car is found, and its evidence is collected, the details of thee case become stranger and stranger. Meanwhile, Catherine investigates the death of three senior citizens when the ceiling of their residence collapsed. The evidence suggests possible negligence on the part of the city engineer who was responsible for inspecting the building.

19 :01x19 - Gentle, Gentle

When a baby is kidnapped from a wealthy family, the investigation reveals several discrepancies in the tales told by the parents and family members. It becomes clear that there is more going on than just a kidnapping.

20 :01x20 - Sounds of Silence

Two women, out partying, strike a young man with their car. As it turns out, not only was he deaf but he was also dead before they struck him. Gil investigates, but runs into problems when the administrators at the dead youth's school refuse to help. Catherine and Nick investigate the murder of five people at a coffee shop, which gets even more suspicious and complicated when one of the victims has mob ties.

21 :01x21 - Justice is Served

Grissom, Nick, and Warrick investigate the death of a jogger who was apparently killed by a wild animal near a park. Things take a mysterious turn when they find that the jogger's liver had been surgically removed after he had died. Meanwhile, Sara and Catherine investigate the death of a young girl at a carnival. The young girl is about the same age as Catherine's daughter, and she takes solving the case personally.

22 :01x22 - Evaluation Day

It's evaluation day for the staff, but Grissom's evaluations take a back seat when a severed head, sans body, is found in a car's trunk. Meanwhile, Sara and Nick investigate when a body turns up in the desert, and it happens to be missing the head. Warrick is sent to investigate things at the juvenile detention center after a teen is found murdered. The only witness to the death is the young man James, whom Warrick identified in episode 3, as guilty of a hit and run and promised to look after.

23 :01x23 - The Strip Strangler

A serial killer is on the loose, and the CSIs race to find the answers. The killer has a clear knowledge of forensics and has done an excellent job of leaving no clues, however. As the investigation stalls, the FBI are called in by the Sheriff, which angers Gil to the point where, duee to his intransigence, he is ordered to stand down from the case and let the FBI supervise things. His CSIs, though, keep him apprised of their findings, though Gil can't be a direct part of the investigation.

24 :02x01 - Burked

A gardener, outside the house, observes Tony Braun, a known drug addict and old-time Vegas casino mogul (i.e., with suggested mafia ties), face down in his house and, judging by the paraphernalia surrounding the body, the apparent cause of death is a drug overdose. However, once the investigation begins, Grissom detects evidence of duct tape on the body, which leads the CSIs to believe that the victim was restrained and forced to ingest lethal amounts of drugs.

25 :02x02 - Chaos Theory

When a young college girl vanishes, apparently with no trace, the CSIs investigate. They find a lot of strange evidentiary odds and ends that point in many directions, but they all turn out to be dead ends. The actual answer of what happened turns out to be far more bizarre than anyone expects.

26 :02x03 - Overload

Grissom finds himself at odds with the Sheriff when he insists on a deeper investigation into what seems to be a suicide at a construction site. The Sheriff is pressured by the site operator to free up the site, while Grissom insists that the man may have been murdered, limiting access to the crime scene and causing construction delays. Meanwhile, Nick and Catherine get stuck with a case with little evidence beyond angora fibers, which are found on a dead teen's underwear. As details are exposed, they believe that the boy's psychologist wasn't acting on the up-and-up.

27 :02x04 - Bully for You

After a youth is found murdered, shot in the back, in the bathroom of a local high school, the team's investigation reveals that the school's top jock and class clown was also a class bully, pointing to the students as likely suspects. Nick and Sara cover the case when an Army veteran's badly decomposed body winds up in a bag.

28 :02x05 - Scuba Doobie-Doo

Sara and Warrick are lead by Grissom to investigate an emply apartment found with blood sprayed across the walls. When the prior tenant claims that his missing girlfriend went to visit her parents yet the parents supposedly never saw her. In the aftermath of a wildfire near Lake Mead, a scuba diver is found in the upper reaches of a burnt-out tree. Did the diver fulfill an Urban Legend?

29 :02x06 - Alter Boys

When a suspect is found burying several bodies, the subsequent investigation by Grissom et. al., appears to be an open and shut case. Grissom is dissatisfied with the simplicity of the evidence, which seems suspicious to him, especially once it turns out that the suspect is the brother of a convicted felon. If falls to Catherine and Warrick to investigate the suspicious death of a woman at a hotel spa. Was it accident, negligence, or foul play?

30 :02x07 - Caged

Grissom and Nick take the case of a female book restorer found dead locked inside a temperature and humidity controlled "cage". Did the restorer kill herself or was it homicide? An autistic co-worker may hold the key to solving the crime. A train-SUV collision leaves Catherine and Sara to sort through the wreckage to determine if the crash was caused by road rage or a careless accident.

31 :02x08 - Slaves of Las Vegas

When a woman's brutalized body is found in a sandbox, Grissom and Catherine's investigation leads them into the world of S&M clubs. Meanwhile, Warrick and Sara investigate a shooting tied to an apparent robbery, but are things as they seem?

32 :02x09 - And Then There Were None

Grissom, Nick, and Warrick investigate a casino heist committed by four women, while Catherine and Sara investigate a murder at a remote convenience store. When the evidence from both crime scenes are compaired, the CSIs are led to believe that there is a connection between the seemingly unrelated crimes.

33 :02x10 - Ellie

While Grissom and Catherine are away, Warrick is put in charge. He and Sara take a case when a con artist, who was involved with Brass's daughter, is murdered. The evidence leads the team also into an investigation of a counterfeit money ring. The CSI's number one suspect in the murder is Brass's daughter, forcing Captain Brass to take himself off of the case, but, while he does so as a cop, he can't do so as a father.

34 :02x11 - Organ Grinder

When a well-known real estate developer is found in an elevator, the CSIs are called to investigate the murder. They realize that the crime scene has been tampered with -- the victim has been redressed -- which complicates the investigation. When the team learns that the cause of death was poisoning and that the man's organs have already been removed and donated, the crime becomes even harder to solve.

35 :02x12 - You've Got Male

Grissom and Sara investigate two female bodies found hidden in pipes at a road construction site. They identify the victims as sisters who share a common link: a former prison inmate. Catherine and Nick are assigned to an apparent hunting accident, but further inspection of the crime scene reveals that the details of the death are not what they seemed.

36 :02x13 - Identity Crisis

The team once more investigates a crime scene left by serial killer Paul Millander. Probing of the crime scene and the files from his past murders, the team realizes that all the victims shared the same day of birth, the day of the murder of Paul Millander's father, with the birth years descending: 1959, 1958, 1957... Grissom believes that he's the next target of Millander since common date of August 17 happens to be his birthday as well... and he was born in 1956.

37 :02x14 - The Finger

When a woman is kidnapped, Catherine is ordered by the kidnappers to accompany a man to deliver the million dollar ransom or else the woman will be killed. As Catherine goes with the man, the team works to try to figure out who is behind the kidnapping.

38 :02x15 - Burden of Proof

When an extra body that doesn't belong there is found at a body farm used for forensic studies of decay, it falls to Grissom to investigate the murder. The death was apparently caused by a bullet, though there are no fragments found. Some of Grissom's actions call his leadership abilities into question with the rest of the CSIs as well.

39 :02x16 - Primum Non Nocere

After a fight breaks out among the players at an amateur hockey game, the goalie ends up at the bottom of a pile. When the pile clears up, he is found dead with a gash across his neck. Grissom, Catherine and Sara are called to determine whether the death was an accident or foul play. Meanwhile, Warrick and Nick investigate the apparently drug-related death of a sax player at a casino.

40 :02x17 - Felonius Monk

Grissom is called to investigate when four monks are shot and killed while chanting in a Buddhist temple. At the same time, Catherine reopens a case involving the murder of her best friend when the man convicted of her murder claims, immediately before his death, that he wasn't the murderer.

41 :02x18 - Chasing the Bus

On its regular run from LA to Vegas, a bus crashes, landing on top of a passing sports car and killing nine people. The dying driver of the bus tells the team that the steering went out without warning and that was what caused the bus to go out of control. Upon discovering that a recent parolee was on the bus is unaccounted for after the accident, the CSIs begin to suspect foul play.

42 :02x19 - Stalker

Jane Galloway is a woman who lives a secluded life -- the shades are always drawn, doors are always triple-locked -- and she falls victim to a serial killer. The CSIs are called to investigate the scene and have to find out who killed Jane and how the killer could have gotten into the house with out tripping Jane's security system. As the evidence is collected, it appears there is a connection between the murderer and Nick, who may be his next victim.

43 :02x20 - Cats in the Cradle

When an 80-year old woman is found murdered in her run-down house, surrounded by dozens of cats, Grissom and Catherine take the case, while Nick and Sara investigate a car bombing that seems to be a murder plot gone very wrong.

44 :02x21 - Anatomy of a Lye

Grissom and Sara are called to the scene when a man's body that had been soaked in lye is found buried in a park. Meanwhile, Nick tries to determine how a man appears to have drowned in the middle of the desert.

45 :02x22 - Cross-Jurisdictions

Grissom and the team are called out when the city's former chief of detectives is killed execution-style in his home after a party and his wife and child are missing. After the station receive reports that they had seen the missing child near Miami, Catherine and Warrick fly to Florida and meet with Horatio Caine, Miami's chief CSI, who works with them on their investigation.

46 :02x23 - The Hunger Artist

When a young woman's body is discovered stuffed in a shopping cart under a freeway, the CSIs investigate. They find that the woman's body is disfigured and starting to decompose, and her face is covered with gashes and scars, leading the team to believe that someone shoved her face into a fan. After seeing the rest of the contents of the cart: an expensive handbag, fashion magazines and a leather day planner, it is clear she was not homeless at all. Grissom expresses the belief that not only did someone want her dead, but "they wanted her ugly."

47 :03x01 - Revenge Is Best Served Cold

Nick and Catherine wind up in the world of street racing when a driver is found dead at an abandoned airstrip.
At the same time, Grissom and the rest look into the death of a champion poker player who suffered fatal convulsions while playing a high-stakes game. In both of the cases, the evidence suggests that the answers may not be as obvious as they first seemed.

48 :03x02 - The Accused Is Entitled

The crew looks into the death of woman whose body is found in the hotel room of a famous actor. Another woman appears to be missing. At trial, the actor hires a very famous attorney to represent him, and also Gil's own mentor to discredit their evidence.

49 :03x03 - Let the Seller Beware

When a wealthy couple are found dead outside of their for sale home, Grissom and Catherine are sent to investigate the possible murder scene. Meanwhile, Sara examines a case involving a cheerleader found dead on a soccer field with her organs removed.

50 :03x04 - A Little Murder

A dwarf is found dead, hanging on a rope above a stage in a casino where a little peoples' convention is being held. Though the scene looks like a suicide, Grissom decides from the evidence that foul play was involved in the man's murder. In a scene reminiscent of the pilot (the death of Holly Gribbs), Catherine is assaulted while investigating the crime scene of an apparent robbery-murder scenario.

51 :03x05 - Abra Cadaver

During a magic act, an unidentified woman actually vanishes and Grissom begins to think that the magician had a hand in the woman's mysterious disappearance from the face of the earth. Across town, Catherine looks into the apparent overdose of a recovering rock star, whose body is found dead on the tour bus with a needle in his arm. Further investigation suggests that all is not as it seems.

52 :03x06 - The Execution of Catherine Willows

A part of Catherine's past comes back to haunt her when a man that she put on death row 15 years ago is about to be executed. However, his execution is postponed a the last moment when new DNA evidence is introduced. Suddenly, a new body turns up at the local college, killed in the same manner of the previous murders, leading to the obvious conclusion that the actual killer may still on the loose... but is it a copycat killer?

53 :03x07 - Fight Night

A boxer dies in the ring after taking a deadly beating from an opponent. The death seems accidental, but Grissom, after looking at the evidence, is lead to believe that the death was murder. Meanwhile, Catherine investigates a Los Angeles gang member who was shot and killed in what appears to be a gang shootout. Nick grudgingly takes the case of a jewelry store robbery, but the three cases turn out to be inter-related.

54 :03x08 - Snuff

Catherine is called upon by a pornographic film producer to watch grainy graphic footage from a possible snuff movie in which a woman may have been murdered. Is it a real snuff picture or was it faked? Elsewhere, Grissom inspects a body that was found in a fire ant mound and has been dead for more than a year.

55 :03x09 - Blood Lust

When a cab driver apparently runs over a teenaged male, he is pulled from his cab and fatally beaten by a racially charged mob who thought he was going to flee the scene. After investigation of the evidence, though, Grissom and his team discover that the boy died from multiple stab wounds, but shows no signs of being actually struck by the cab. Who in the mob killed the cabbie, and what happened to the boy?

56 :03x10 - High and Low

Grissom, Nick, and Warrick are sent to the scene when a man was murdered and shoved off of a six-story building, but discover that he actually fell even farther than that. Grissom needs to take himself off of the case when he begins to suffer from a re-occurrence of his hearing problems. Elsewhere, Catherine investigates the shooting death of a man who was killed outside of a bar where he was a regular.

57 :03x11 - Recipe for Murder

When a gruesome murder occurs at a slaughterhouse, Grissom and Catherine team up to find the culprit. Unfortunately, the evidence has been ground up in a meat grinder. Meanwhile, Sara and Warrick work to find out if whether an apparent suicide of a young woman is as is seems or if foul play was involved.

58 :03x12 - Got Murder?

When a group of bird watchers find a raven with an eyeball in its mouth, the CSIs are able to connect the eye to a divorced man and his two children. In another case, as David is about to begin his first autopsy, supervised by Dr. Robinson, the body startlingly turns out to be anything but dead. They successfully revive him, but he dies later of his injuries. Warrick and Grissom look into the man's reasons for being on the autopsy table in the first place.

59 :03x13 - Random Acts of Violence

When a drive-by shooting results in the death of a young girl asleep in her bedroom, Warrick is assigned the case. The murder occurred in Warrick's old neighborhood, and the young girl is the daughter of an old friend and mentor. Warrick allows his emotions to get out of control, which leads Grissom to pull him from the case, infuriating Warrick. Meanwhile, Nick investigates the murder of a computer company employee which has only has three possible suspects -- all of whom are employees of the company. While each appears to have motive, all three also appear to have ironclad alibis.

60 :03x14 - One Hit Wonder

Catherine leads the investigation of various instances of a Peeping Tom as the team rush to catch the Tom before his crimes escalate to assaults -- a path which, though unusual, is suggested by specific evidence found at the crime scenes. Meanwhile, Sara reopens a case involving her friend, a district attorney, who was shot during an attack on her husband three years prior. As Sara digs back into the case, the district attorney goes into potentially lethal surgery to remove the bullet.

61 :03x15 - Lady Heather's Box

When two men are found murdered, Grissom's investigation leads him to another encounter with the mysterious Lady Heather. In the meantime, Catherine rushes to find what almost caused the death of her daughter and apparently related disappearance of her ex-husband.

62 :03x16 - Lucky Strike

A man dies while driving with a stake driven through his head, sending Grissom and Nick out into the field to find the "vampire" killer. Meanwhile, Warrick and Catherine work together to find out who killed a well-known NBA player's five year old son.

63 :03x17 - Crash and Burn

An elderly woman drives her car straight into a packed restaurant, injuring many, and sending the crew to the scene to determine if the crash was accidental or intentional. Meanwhile, Grissom and Nick look into a case of a woman suffering carbon monoxide poisoning in her home.

64 :03x18 - Precious Metal

Catherine, Nick and Sara looking into a body found in the mountains that appears to have been dead for months. This leads the trio into the world of the world of robots and "robot wars", where robots are designed as "gladiators", to fight in an arena until one is incapacitated. Elsewhere, Warrick and Grissom investigate the body of a man in an alley, but their investigation is made difficult when the medical examiner “loses” the body for 11 days. Greg is called on to help the investigation by going undercover when a connection to an illicit gambling operation is found.

65 :03x19 - A Night at the Movies

When a movie-goer is found dead in his seat, Catherine and Grissom team up to investigate. Meanwhile, the team stumbles across a forensic stalemate while examining the shooting death of a teenager.

66 :03x20 - Last Laugh

Grissom and Catherine look into the case of a comic who died while doing an act on stage, apparently a result of poisoning. The evidence appears to suggest that he died due to a tainted bottle of water. The investigation becomes more complicated when a teenaged boy dies after drinking the same brand of water. Has someone tampered with them? Meanwhile, Detective Brass reopens a case of a woman’s death that was deemed accidental, after Brass sees the woman’s husband with a trophy date in an expensive new car.

67 :03x21 - Forever

Grissom, Catherine and Nick investigate the trampling death of a horse trainer while in-flight aboard a private jet. At the same time, Sara and Warrick investigate a “Romeo and Juliet”-like death scene found in the desert.

68 :03x22 - Play with Fire

The personal lives of the CSIs are shown while Grissom, Sara, and Nick look into the murder of a woman in a press box at a high school sports stadium. At the same time, an explosion in the DNA lab at the CSI headquarters that injures a lab tech falls to Catherine and Warrick's investigative skills.

69 :03x23 - Inside the Box

When a professionally executed bank robbery leads to the murder of a detective who happened to be at the scene, Grissom and his team are sent to investigate. While the scene is being examined, Grissom suffers another bout of hearing loss and another member of the CSI team receives a personal revelation.

70 :04x01 - Assume Nothing (1)

Two couples meet at a bar, but only one couple will leave alive. However, after the second couple turn up dead, murdered in a similar fashion, the CSIs begin to suspect that two serial killers are on the loose. But when information about the case is leaked to the press, and when the team has a hard time obtaining a search warrant from a judge, the case becomes increasingly complicated. Meanwhile, Catherine learns some disturbing information about her father’s murder trial.

71 :04x02 - All for Our Country (2)

The team is able to come up with some lead suspects in the serial murderer cases, but when their suspects are murdered, Grissom begins to suspect an inside job – and suggests that a cop might be the leak, upsetting Det. Brass. Meanwhile, Catherine and Sara are sent to investigate when a football fan’s bloated body is found in his bathtub.

72 :04x03 - Homebodies

When an old woman is found mummified in her closet, Grissom and Warrick are dispatched to investigate the scene. Elsewhere, Sarah and Nick investigate a breaking and entering scene and find a raped teen at the site. Soon Sarah and Nick realize that their case and Grissom’s case are not as unrelated as they seem. Meanwhile, Catherine examines a gun found by a young boy and is able to connect the gun to a murder case from across town.

73 :04x04 - Feeling the Heat

Las Vegas is hit with record breaking, triple-digit heat and heat related deaths begin to pop up around town. Grissom and Catherine investigate when a baby is found locked in a sweltering car. Meanwhile, Warrick looks into an apparent heat stroke death while Nick and Sara investigate when a woman’s body is found floating in a lake with a serious head wound.

74 :04x05 - Fur and Loathing

The CSIs are emerged into the little known “furry” side of Las Vegas after a man is found dead dressed in a raccoon suit. Meanwhile, the team looks into a gunshot victim whose body is found deep-frozen in a deep-freezer.

75 :04x06 - Jackpot

Dr. Robbins receives a severed head from Jackpot, Nevada, sending Grissom to the town in order to find the rest of the body. While in Jackpot, Grissom finds it hard to solve the case when the local police department and residents show very little cooperation. Meanwhile, Catherine is surprised when her father presents her with an unexpected gift.

76 :04x07 - Invisible Evidence

Warrick’s appearance at a preliminary hearing for a rape and murder case takes an unexpected turn when the key piece of evidence is thrown out of court. Now Grissom and his team have 24 hours to come up with more evidence or the murderer will be set free.

77 :04x08 - After the Show

When a suspect develops a strange infatuation with Catherine, she ends up taking over a high-profile case about a missing woman who was a rising young starlet. Meanwhile, Sara and Nick are furious at Catherine for taking over the case that they thought would help make their career and possibly earn them a promotion.

78 :04x09 - Grissom Versus the Volcano

After the sheriff is pressured to find the killer who murdered an air marshal by means of a car bomb, he, in turn, pressures Grissom, Catherine, and Nick for results. Meanwhile, Warrick and Sara work to find out who murdered the wife of a high-profile Las Vegas performer.

79 :04x10 - Coming of Rage

When a teenager is found murdered at a construction site, Grissom, Sara, and Warrick work to track down the killer by using a bloody hammer. Meanwhile, Nick and Catherine try to figure out how a woman was shot and killed in her lawn when no one nearby the scene of the crime was near a gun.

80 :04x11 - Eleven Angry Jurors

During a high-profile murder trial, the single holdout on the jury is found dead in the jury deliberation room. With the other eleven jurors, who all voted guilty, showing obvious dislike for the dead juror, they immediately become the main suspects. Meanwhile, Nick reopens a case after the sister of the victim approaches the department with new, ground-breaking evidence.

81 :04x12 - Butterflied

A woman is found murdered in her home, and her uncanny resemblance to Sara causes Grissom to take a personal interest in the murder investigation. As he probes deeper and deeper into the case, Grissom begins to reexamine his life and the decisions that he has made up until now.

82 :04x13 - Suckers

Grissom, Sara and Nick are sent to investigate when a man is electrocuted at a casino that’s hosting Japanese antiquities. The three CSIs discover that the electrocution was a distraction used to steal the main item at the exhibit: an antique samurai sword. Meanwhile, Catherine and Warrick look into a “vampire murder”.

83 :04x14 - Paper or Plastic?

After a grocery store robbery goes wrong, a shootout results that leaves five individuals dead. With the large crime scene and enormous amount of evidence to collect, each of the CSIs are called to investigate the scene. Meanwhile, the police officer at the crime scene thinks that Grissom has a grudge against him.

84 :04x15 - Early Rollout

The CSIs investigate the scene of a crime where a man and his porn star wife were killed execution style. Things begin to become personal for Catherine when Grissom calls her in to talk about her evaluation. Meanwhile, Brass is lead to believe that Sara might have a personal problem.

85 :04x16 - Getting Off

Catherine and Sara investigate the death of what they first assume to be a transvestite. However, at the autopsy they learn that what they thought was make-up is actually face-paint leading them to one conclusion – he was a clown. Meanwhile, Grissom, Nick, and Warrick look into the death of a man, who worked in a drug recovery center, in the homeless part of town.

86 :04x17 - XX

An arm falls out from underneath of a bus and after an investigation of the bus, the CSIs find the remains of the body stuck beneath the bus. The bus in question was carrying inmates from a women’s correctional facility, leading the CSIs to believe that an inmate tried to escape during transport. But when tests reveal that the victim was dead before the transport began, the case becomes more complex. Meanwhile, Grissom looks into a case involving a man stabbed once in his chest and four times in the back – all wounds being exactly the same height.

87 :04x18 - Bad to the Bone

A violent murder occurs in a casino parking garage and surprising events in the interrogation room leads the team to several shocking discoveries about the murder. The case revolves around three interconnected incidents including a missing child, a missing woman, and a body that has been dead for a while.

88 :04x19 - Bad Words

Warrick, Catherine, and Nick are assigned to find the cause of a house fire that resulted in the death of a teenaged girl. The trio assumes arson since the fire was in the same neighborhood as a previous arson fire. Meanwhile, Grissom and Sara team up to investigate when a man, who was competing in a word game tournament, is found dead with letter tiles in his stomach.

89 :04x20 - Dead Ringer

Grissom, Catherine and Nick look into the death of a runner who died during a competition. Meanwhile, Sara and Warrick investigate when a couple is found dead in their hotel room in an apparent murder-suicide. With a ‘cop’ competition in town with 20,000 police attending, the investigations become very interesting being that all of the suspects and victims are police officers.

90 :04x21 - Turn of the Screws

At an amusement park a roller coaster runs off of the track, resulting in six deaths. The CSIs are sent to decide if the incident was an accident or the result of foul play. Meanwhile, Warrick and Catherine work to find the killer of a thirteen year-old girl.

91 :04x22 - No More Bets

Two men are murdered after they are found cheating in one of Sam Braun’s casinos. Grissom and Warrick take over for Catherine after her personal ties to the case get her thrown off. Meanwhile, Sara is devastated when Nick gets the promotion that she wanted.

92 :04x23 - Bloodlines

A casino employee is brutally beaten and raped on her way home from work, and survives the attack. Though she is able to identify her attacker, a DNA test sets the suspect free. Upon hearing this, Grissom must decide whether or not the evidence can be wrong. Meanwhile, Grissom rescues one of his co-workers that happens to find themselves on the other side of the law.

93 :05x01 - Viva Las Vegas

An exciting night in Las Vegas results in the death of three people – one male dead in an alien suit, one male found dead in a bathtub, and one female found dead. The CSIs suspect that the killer is one of two suspicious men at the scene of the crime. However, the case becomes more complex when the team discovers that one of the dead males was holding a Polaroid of another dead male. Meanwhile, Greg’s replacement arrives at the lab.

94 :05x02 - Down the Drain

After a heavy downpour in Las Vegas, a body washes up in one of the city’s storm drains. When the team arrives to examine the body, they come across bones from another murder. Now, the team must determine the cause of death for the first body and look into the origins of the bones.

95 :05x03 - Harvest

The CSIs race against the clock to find a young girl who was kidnapped from a convenience store parking lot. Will the CSIs be able to find her before it’s too late?

96 :05x04 - Crow's Feet

A woman turns up dead in her hotel suite from what appears to be caused by the ebola virus. When another woman is found dead with similar symptoms, Catherine and Nick are sent to the scenes to investigate. Meanwhile, Sara and Greg team up with Grissom to find the cause of death of a home owner after his house was tented for an insect infestation.

97 :05x05 - Swap Meet

Sara and Grissom investigate when a woman is found dead after a swap party in which the married couples in the neighborhood get together and swap spouses. The evidence they collect shows that the victim had several partners during the night which leads them to a neighbor’s back yard. Meanwhile, Warrick and Nick investigate the murder of a video arcade landlord and find that there’s more to the crime than they originally thought. Meanwhile, Catherine tries to get a promotion in order to become part of the day shift.

98 :05x06 - What's Eating Gilbert Grissom?

A killer from the past returns, this time with equally deadly results. Now, the CSIs must race against the clock to find the killer before he strikes again. Meanwhile, Grissom begins to stress out when he starts to think that the killer is outsmarting him.

99 :05x07 - Formalities

A 17 year-old is murdered in a casino penthouse and Grissom heads out to investigate the scene. He is joined by Sophia Curtis, a day-shift member, who aids him in his research. Later, the entire CSI team is brought onto the case when Grissom and Sophia discover that a kidnapping occurred along with the murder.

100 :05x08 - Ch-Ch-Changes

A woman driving erratically is pulled over by police. Two miles up the road from where she was stopped, she is found dead in her car. During the autopsy, Dr. Robbins determines that all is not as it seems – the woman is actually not a woman. This revelation leads the team into the world of sex changes and transgenders in order to find the killer.

101 :05x09 - Mea Culpa

While testifying in the murder trial of a restaurant owner, Grissom is presented with new evidence that leads the team to reopen the case. The reopening of the case causes Eckley to closely examine Grissom and his team’s effectiveness, and the results of his examination leads to an unprecedented change in the both the team and the series.

102 :05x10 - No Humans Involved

Grissom and his newly formed team investigate when a five year old boy dies from starvation. Their investigation leads them to discover that the boy has siblings that may be nearing the same fate as their brother. Meanwhile, Catherine and her team work to find the man who killed a prisoner during a cell fight.

103 :05x11 - Who Shot Sherlock?

A Sherlock Holms enthusiast is murdered in his perfectly recreated Victorian Era Baker Street study. At first the team believes that the death was a suicide, but after reexamination of the scene and of the evidence, Grissom determines that other factors were involved in the man’s murder. Meanwhile, Nick and Warrick look into a car accident in which the driver went over an embankment out in the desert.

104 :05x12 - Snakes

A baby rattlesnake is found in the throat of a decapitated head. In order to catch the killer, the CSIs put themselves into the world of narcocorrido, a Mexican musical lifestyle that idolizes violent acts and brutality. Meanwhile, Sofia and Greg investigate the death of a woman found dead in the front seat of a handicapped van at a casino. They soon discover that the shooter had to have been confined to a wheelchair, narrowing the search.

105 :05x13 - Nesting Dolls

Two female corpses are found in a new construction site, leading the CSIs to the world of Russian mail-order brides and the torture the women go through in order to earn citizenship through marriage. Meanwhile, Sara is lectured by Ecklie after she makes an inappropriate comment, leading her to confide in Grissom a family secret she’s tried to hide from the rest of the team.

106 :05x14 - Unbearable

When a Kodiak bear is found dead with its gall bladder removed, and the body of a murdered hunter nearby, the CSIs determine that another suspect was involved in both murders. Meanwhile, a young mother is found dead after a heavy night of partying out in the town. After some investigation, it seems that her husband isn’t as innocent as he looks.

107 :05x15 - King Baby

A casino owner is found dead and naked in his driveway and both CSI teams get together to find out who killed the man. After thorough investigation of the evidence, the CSIs discover an adult nursery hidden in the man’s house. This discovery leads them into the world of infantilism: men who get pleasure from wearing diapers and being treated as an infant.

108 :05x16 - Big Middle

Grissom and his team are sent to an APAPSP convention, "Association to Promote Acceptance of Plus-Sized People", to search for a killer. The evidence the collect shows that the victim died from asphyxia due to a large object stuck in his chest. Meanwhile, Catherine and her team are thrust into the world of high-stakes gambling when a man is found dead in the Vegas outskirts with a large amount of money and betting slips on him.

109 :05x17 - Compulsion

A serial killer strikes again in Las Vegas and the CSIs are able to dig up evidence from a past slaying in hopes that their new technology will help them find the killer. The fingerprints they are able to recover link them to Jesse Acheson, who quickly becomes their number one suspect. Meanwhile, a teenaged boy is found dead in his bedroom, and though his brother confessed to the murder, the evidence suggests otherwise.

110 :05x18 - Spark of Life

Grissom uncovers an unlikely connection between a suicide of a woman in the nearby Vegas wilderness and the murders of an entire family in the Las Vegas suburbs. The evidence is able to piece together an unfaithful spouse and the deadly results of one woman’s frantic need to get pregnant.

111 :05x19 - 4 x 4

Catherine and Warrick investigate the death of a model who works at auto conventions after she is found murdered on a camper display. Nick looks into the death of a boy found beaten and burned to death on a bus bench near a strip mall. Elsewhere, a car accident leads Grissom to suspect that the driver intentionally hit his victim, while Greg and Sara examine the death of a body builder who died when a toxic mold ate him alive from the inside out.

112 :05x20 - Hollywood Brass

Capt. Brass travels to Los Angeles to ask Captain Annie Kramer, a former colleague, for help when his daughter Ellie, whom he is not on good terms with, calls him for help after her friend goes missing. When the friend is found dead, Brass asks Warrick, who is also in Los Angeles for a CSI convention, to help him and Capt. Kramer hunt down the killer..

113 :05x21 - Committed

A Nevada mental hospital for sexually violent criminals and the criminally insane becomes the site of Grissom’s newest investigation when an inmate is murdered. As Sara and Grissom probe deeper into the case, they quickly learn that each of their suspects, all of which are locked inside the facility, are capable of extreme, brutal violence.

114 :05x22 - Weeping Willows

At a bar after a tough day on the job, Catherine has a romantic encounter with a stranger, Adam Novak. When a woman at the same bar turns up dead, Adam becomes the investigation’s number one suspect. Meanwhile, Catherine and Grissom clash after Catherine fails to tell him her connection to the suspect, while Mia deals with lab problems when the evidence becomes cross-contaminated.

115 :05x23 - Iced

When a college basketball star doesn’t show up for the big game, one of his fellow dorm residents ends up finding the player dead in a sleeping bag with a girl in his dorm room. As Sara and Greg investigate the scene, all of the evidence leads them to dead end after dead end. Meanwhile, Catherine and her crew investigate when a body is found in what seems to be a crop circle – with no footprints leading to or away from the body.

116 :05x24 - Grave Danger (1)

Nick is kidnapped by a man with a grudge against the CSIs. When he awakens, he finds himself trapped in a coffin with a loaded handgun and a message telling him that he better kill himself because he’s going to die anyway. Attached to the coffin is a webcam that tapes Nick’s every move and sends the image back to the CSI lab where his co-workers slowly watch him suffocate.

In a race against the clock, the two CSI teams combine back into one team, and under Grissom, the team works to find Nick. They try to hack into the webcam, but much to their horror, the picture is replaced by a countdown and a message telling them to bring a ransom to a warehouse. Grissom takes the money to the location and comes face to face with Nick’s kidnapper. However, the kidnapper has an explosive plan that may lead to the death of Grissom and of Nick.

117 :05x25 - Grave Danger (2)

Grissom delivers the ransom money to the kidnapper, but the kidnapper blows himself up, leaving no clues as to where Nick is buried. As the clock slowly ticks away, the CSIs must rush to find Nick who is buried underground and slowly sufficating.

118 :06x01 - Bodies in Motion

Grissom, Catherine and the CSI team investigate three separate cases: a couple is found dead in bed after a suspicious trailer explosion; a stripper is murdered and her body is dumped in the bad part of town; and two bodies are found decomposing in the trunk of a car, forcing the CSIs to “wrap up” the evidence and examine it at the lab.

119 :06x02 - Room Service

The team investigates when a young movie star is found dead in a hotel suite left in a compromising position. The movie star died after a night of heavy partying in his hotel suite along with his large band of groupies. Meanwhile, while downstairs at the hotel, the CSIs discover that the immigrant kitchen workers may have turned against each other, and their hostilities between one another may have led to murder.

120 :06x03 - Bite Me

When a woman meets her death on a flight of stairs, the team investigates and finds enough blood evidence to indicate that her death was not an accident.

121 :06x04 - Shooting Stars

When one cult member turns up missing at a mass suicide crime scene, Grissom and his team investigate whether the small cult really committed suicide or were murdered.

A middle of the night break-in at a suburban home on the edge of the Vegas desert leads the CSIs to discover an abandoned military compound being used to house a small cult. Once inside, they discover a mass suicide has taken place. However, with 11 bodies and 12 beds, Grissom surmises that the killer may be the one body missing.

122 :06x05 - Gum Drops

The CSI team suspects an entire family has been murdered, but cannot prove it until they find the victims' bodies. When the blood evidence suggests only three people were killed, Nick is the only one on the CSI team that believes the fourth family member, the young daughter, is still alive. Now, it's a race against time to find the perpetrators who may lead the CSIs to a possible survivor.

123 :06x06 - Secrets and Flies

The CSI team uncovers evidence in the investigation of a young mother's suicide that proves that the woman's newborn baby was not her biological child -- in fact, she was still technically a virgin at the time of her death. If the team discovers how the child was conceived, the answer may lead them to a killer. Meanwhile, Grissom is called into court to refute expert witness testimony from a suspected manipulator of evidence.

124 :06x07 - A Bullet Runs Through It (1)

The CSI team investigates the death of a police officer during a wild Vegas shootout that may have been caused not by the criminals they were pursuing, but by one of his fellow officers. Part one of a two-part episode.

125 :06x08 - A Bullet Runs Through It (2)

The CSIs sift through the overwhelming evidence from a shootout with drug dealers in order to determine who is responsible for the death of a police officer killed during the incident, on the conclusion of a two-part episode.

When a wild police chase of drug smugglers through the streets of Las Vegas leaves an officer killed, the CSIs suspect that the cop killed in the line of duty was shot by one of his fellow officers.

126 :06x09 - Dog Eat Dog

The CSIs investigate the unusual death of a man found dead in a dumpster on Thanksgiving night. Grissom and his team must take their clues from what the man ate in order to identify his cause of death, which leads them into the world of competitive eating. Meanwhile, Nick and Sara investigate the suspicious death of a couple attacked and killed by their seemingly sweet dog.

127 :06x10 - Still Life

The lack of evidence in a reported kidnapping case leads Grissom and his team to wonder if the case is fabricated. Without substantial evidence, the CSIs begin to wonder if a kidnapping actually took place at all. But when the child turns up unharmed at a local convenience store with a couple claiming to be his parents, Grissom and his team must use what little forensic evidence is available to solve the mystery of what actually happened to the first mother's son.

128 :06x11 - Werewolves

The CSIs investigate the murder of a man who has Hypertrichosis, "the human werewolf syndrome", which makes him grow excessive body hair. After further investigation, Stokes and Willows uncover a secret which ends up being the key to solving the crime.

129 :06x12 - Daddy's Little Girl

Warrick, Sara, and Greg investigate the death of a young motocross racer whose girlfriend's relationships have a tendency to end in tragedy. Meanwhile, Nick and Catherine investigate the death of a woman who was run over by a car. After fruther investigation, Nick and Catherine discover that the woman, Sandra Mullins, may have ties to Walter Gordon, the man who kidnapped Nick.

130 :06x13 - Kiss-Kiss, Bye-Bye

Grissom and his team investigate the shooting death of a young man at a lavish party for a millionaire. Las Vegas's most influential citizens, including Sam Braun, become suspects.

131 :06x14 - Killer

In a CSI first, a crime will be shown from the killer's perspective. The CSIs investigate two deaths, both linked to the same suspect. As the evidence starts to overlap, the CSI team begins to move in on the murderer.

132 :06x15 - Pirates of the Third Reich

A woman's bald, branded and emaciated body is discovered dumped in the desert. The investigation soon reveals that the victim is the estranged daughter of Grissom's one-time friend Lady Heather. The probe also reveals that one of the dead woman's eyeballs isn't her own and belongs instead to a convicted sex offender. When Grissom confronts Lady Heather, she isn't too cooperative, but later she provides Grissom with some astonishing evidence.

133 :06x16 - Up in Smoke

The CSI team explores the case of a man found stuffed down the chimney of a previous suspect's home.

The CSIs determine that the body they have found was burned before it was dumped down the chimney, leading them to believe the murder was pre-meditated. During the processing of the home, Catherine and Warrick realize that this is the same address of an unsolved homicide of a young female teenager from a year ago, and re-open the investigation.

134 :06x17 - I Like to Watch

A camera crew from a reality series follows the CSI team during the first 48 hours of an investigation involving an upscale real estate agent found dead in her glamorous high-rise apartment. The cameras reveal the intricacies of how the CSIs piece together the case, but also delve into how each member of the team deals differently with the emotional and physical demands of their work.

135 :06x18 - The Unusual Suspect

When the body of a young girl is found in a high school, the CSIs are shocked when a twelve year-old classmate confesses to the savage murder. But the CSIs are led to believe that the girl is covering for her brother, so they turn to the evidence to cast some light on which sibling committed the brutal murder. However, the evidence leads them to think that a completely different scheme led to the girl's murder.

136 :06x19 - Spellbound

As a psychic is telling the futures of two young women, she begins to see her own murder taking place. When the psychic is found dead, it's up to the CSIs to determine the cause of death. Greg, who has a family "occult" history, thinks that the woman's death may be a result of greater forces, but Grissom, characteristically, is reluctant to believe in the supernatural.

137 :06x20 - Poppin' Tags

The CSIs are sent to the scene when three teenagers are murdered during the promotion of a rapper's new album. The team find themselves in a world of rappers where artists will use any means necessary, including murder, to get to the top. They soon suspect that Drops, J-Lady (both rappers), or Marcus, an auto dealer, will lead them to the answers they're looking for.

138 :06x21 - Rashomama

A wealthy defense attorney is murdered at her son's wedding. The case seems to be going fine until all the evidence and Nick's car are stolen, compromising the investigation. The team assume that the car and evidence robberies are connected, but when they uncover new evidence, the team is able to piece the crime together.

139 :06x22 - Time of Your Death

A young man is found dead in a designer suit and with the keys to a Ferrari in his pocket. Investigations show that he was having a "really good day", winning at the poker tables, meeting and bedding a really beautiful woman, after beating another guy's time with her. Deeper investigation reveals that he was an unwitting participant in a special gift, a weekend created by a company that specializes in identifying one's fantasy and making them come real.

140 :06x23 - Bang Bang

The suspect in a murder investigation leads the CSI crew on a chase through one of Las Vegas's busiest casinos. After taking a hostage, the man locks himself in a guest room, and the CSIs have to rush to uncover if the man worked alone or not. When their time begins to wind down, one of the CSIs decides to risk their life to negotiate the safe return of the hostage.

141 :06x24 - Way To Go

In the aftermath of the shooting, the CSI team holds vigil near the bedside of their teammate who may not survive. Meanwhile, the CSIs investigate the scene of a man who was decapitated by a train. After examining the evidence, they discover that the accident was really a cover up for another murder.

142 :07x01 - Built To Kill (1)

A Cirque du Soleil dancer is killed during a show which sends the CSI crew backstage to investigate her murder. Meanwhile, after Catherine and Nick go to a club to watch a performance by John Mayer, Catherine has to rely on her CSI skills to uncover who is targeting her family. Elsewhere, Grissom is puzzled when he receives a mini-replica of a crime scene he is investigating.

143 :07x02 - Built To Kill (2)

Grissom's fascination continues with a miniature replica of the crime scene he's investigating where a rock star was murdered. With the clues that the replica provides, Grissom works to find the killer. Meanwhile, Catherine finds herself in danger and continues to hunt for the person responsible.

144 :07x03 - Toe Tags

Donna, Rebecca, Jack, Lou and Ray all share a similar characteristic -- they're all dead. The team splits up to solve their murders: Brass and Catherine pair up to take on Donna's case, a former cop who was working as a bodyguard; Nick and Greg investigate Jack's death, who was an Iraq veteran that was killed in front of his wife and daughter; Warrick and Sofia take on the case of Rebecca, a former supermodel who died while hiking; and Grissom and Sara pair up to look into the deaths of Lou and Ray whose bodies were found together in Lou's garage.

145 :07x04 - Fannysmackin'

An innocent man is attacked and beaten to death by a man in a black cape. When the CSIs investigate, they find that a similar incident took place only moments earlier. The incidents continue to occur and the crew follow the trail of evidence hoping to get to the next victim before it's too late. But when Greg interrupts a beating in progress, he is forced to make a decision that will change his life forever.

146 :07x05 - Double Cross

The CSIs investigate the death of Charlotte Sommerville who was found crucified in a church. The case takes a twist when the CSIs uncover that Charlotte was having an affair with the church's priest and a car dealer that Charlotte knew in high school.

147 :07x06 - Burn Out

Two young boys go missing and Grissom must get into the mind of a local sex offender who emerges as the primary suspect. In order to find out who the real abductor is, Grissom is forced to ask the local pediphile for help. However, the task of finding the culprit becomes more complicated than Grissom and the rest of the CSI crew ever expected.

148 :07x07 - Post Mortem

The CSI team investigates the death of a retired cocktail waitress with serious cancer. Did her recovering junkie nephew or her drug dealing neighbor murder her for her pain medicine? That's the working theory until the nephew finds a miniature crime scene on his aunt's porch - an exact duplicate of the crime scene and similar to a diorama they received earlier. Elsewhere, a coroner's inquest is called to examine Greg's conduct in the events that led to the death of Demetrius James and Greg receives an unpleasant surprise at the end of the episode.

149 :07x08 - Happenstance

Identical twins are both found murdered on the same night, leading the CSIs to investigate whether or not the two murders have a connection.

150 :07x09 - Living Legend

The remains of Mickey Dunn, a wanted Las Vegas mobster who disappeared in the mid 1970s, are fished out of Lake Mead with a bullet hole in the head. Soon afterwards, a wheelchair-bound man is murdered and a photo found on his body shows the victim with Dunn and three other men. Dunn and the victim have Xs on their faces. It quickly becomes apparent that the other three men may also be targets.

151 :07x10 - Loco Motives

Grissom is called to the scene when a poultry processing plant employee is found dead in an electric stun bath that is used to electrocute chickens. The team is shocked to discover a mini-replica of the crime scene, a calling-card similar to the replicas found at two other homocides. Meanwhile, the team looks in to the death of a man and an woman who were found stuck in cement at a construction site as well as the death of an elderly Russian woman.

152 :07x11 - Leaving Las Vegas

Catherine testifies in a murder trial in which a man is accused of murdering his own mother three years ago, but the suspect is found not guilty. Catherine, however, believes he did commit the crime and that he may also have killed two other people, so she sets out to find the other victims. Catherine's probe leads to a small Nevada town where an elderly woman and her daughter were fatally stabbed and shot three years earlier. Back at the lab, Grissom prepares to leave on a four-week sabbatical.

153 :07x12 - Sweet Jane

With Grissom away at his new teaching job, the rest of the team has difficulty adjusting to Michael, their new team leader who's filling in for Grissom. Under their new guidance, the CSIs investigate the murder of a young girl who may be the latest victim of a serial killer who has been on the loose and killing since the 1970s.

154 :07x13 - Redrum

Keppler persuades Catherine to help him fake a crime scene and deceive their colleagues in a controversial plan to catch the west coast's biggest illegal drug supplier, who is the leading suspect in the murder of an anti-drug assemblyman who was gunned down in the desert. Keppler concocts the plan when the suspect disappears and his trail grows cold after several weeks.

155 :07x14 - Meet Market

Nick and Keppler are sent deep into the bizarre world of the black market body parts sales after a body is found burned with its organs removed. Meanwhile, the other CSIs look into the the death of a wealthy woman killed in her home.

156 :07x15 - Law of Gravity

Grissom returns to the lab following his teaching sabbatical. Keppler tries to keep his connection to a double murder case a secret and keep his dark past from his CSI co-workers.

157 :07x16 - Monster in the Box

The miniature killer sends a message to Grissom -- another miniature that foreshadows the death of a woman and her cat. With less than 24 hours to prevent the murder, the CSIs work quickly while Grissom regrets holding up the investigation by going on sabbatical.

158 :07x17 - Fallen Idols

Grissom and his team are discouraged as they begin investigating the disappearance of a high school basketball star, Ryan Lansco, and his cheerleader girlfriend. Grissom's quip that the young lovers may have run off to Mexico is soon quashed by the discovery of drops of blood by Ryan's vacant parking spot at the school. After finding a letterman jacket and cheerleading sweater in the field house and a pool of Ryan's blood nearby, the team tries to determine what went awry.

159 :07x18 - Empty Eyes

While processing a murder scene, Sara is haunted by the last words and eyes of the sixth victim.

160 :07x19 - Big Shots

A high profile man is murdered in his limo and after investigation, Greg learns that the victim had connections to a man he killed in self-defense. The CSIs uncover that the brother of the man killed in self-defense may be behind the limo murder.

161 :07x20 - Lab Rats

When Grissom and the team head out on cases, Hodges, Archie, Henry, Mandy and Wendy team up to try to solve the miniature killer cases.

162 :07x21 - Ending Happy

The CSIs must determine which of several life-threatening actions against a washed-up boxer lead to his death.

163 :07x22 - Leapin' Lizards

The CSIs investigate the murder of a woman who is a part of a UFO club that believes aliens have mated with humans for several generations in order to conquer the world.

164 :07x23 - The Good, The Bad and the Dominatrix

Grissom is reunited with Lady Heather during an investigation, much to Sara's chagrin, when she is attacked by a sadistic client who she refuses to name.

165 :07x24 - Living Doll (1)

The team gets closer and closer to identifying the miniature killer, but when Sara goes missing, Grissom must expose their relationship to the team in order to save her life.

166 :08x01 - Dead Doll (2)

Sara's fate hangs in the balance as the CSIs rush to find out whether or not she survived.

167 :08x02 - A La Cart

The CSIs investigate two bizarre cases -- one involving the death of a go-cart racer and one involving a murder at a hip, new restaurant.

168 :08x03 - Go To Hell

The CSIs are called to investigate when an entire family is murdered, except for the daughter who claims to be possessed by the devil.

169 :08x04 - Case of the Cross Dressing Carp

Grissom and his team of CSIs find the body of a man who died due to strangulation by hanging whose body appeared to be that of a woman.

170 :08x05 - The Chick Chop Flick Shop

Grissom and the CSI team go behind the scenes at an adult horror film studio following the death of a lead actress that seems likely to have been murder.

171 :08x06 - Who and What

Jack Malone of the 'Without A Trace' FBI team joins Grissom and the Vegas CSIs as a missing boy he is searching for may be the body the CSIs are investigating. The crossover concludes in the Where and Why episode of Without a Trace

172 :08x07 - Goodbye & Good Luck

In the final episode featuring Jorja Fox, a suspect from Sara's past reemerges, causing her to question her future with the CSIs.

173 :08x08 - You Kill Me

On a slow day, Hodges hypothesizes murders in the lab and encourages his fellow lab-techs to be a CSI for the day, and solve the crimes. Hodges has ulterior motives in doing so, however, which are quickly revealed. Meanwhile, the CSIs comfort Grissom in Sara's absence.

174 :08x09 - Cockroaches

Warrick's addiction begins to get the best of him as his investigation into the Vegas mob results in him being a prime suspect in another murder case.

175 :08x10 - Lying Down with Dogs

The CSI investigate the murder of a socialite with ties to illegal dog-fighting. Meanwhile, Warrick tries to prove he did not have anything to do with the death of an exotic dancer.

176 :08x11 - Bull

The CSIs look into two murders that occurred during a bull riding event that may be connected to an illegal bull breeding ring.

177 :08x12 - Grissom's Divine Comedy

Grissom and his team come down with the flu as they are called in by DDA Klein to look into the deaths of several witnesses in a grand jury case against a violent Las Vegas gang.

178 :08x13 - A Thousand Days on Earth

The violent death of a 3-year-old girl takes a personal toll on Catherine as she searches for the victim's killer.

179 :08x14 - Drops' Out

An incarcerated criminal lends Brass and Nick a hand on a case involving two murders that occured in the same appartment building.

180 :08x15 - The Theory of Everything

Grissom and the CSI team find several victims with green blood, leading them to assume each of the murders are connected in some way.

181 :08x16 - Two and a Half Deaths

The CSI's investigate when a Hollywood diva sitcom star is murdered while filming an episode in Las Vegas.

182 :08x17 - For Gedda (1)

Warrick is the main suspect when an infamous Vegas gangster is found murdered. As the team investigates whether or not Warrick committed the crime, even Warrick himself is unsure if he killed the gangster or not.

183 :09x01 - For Warrick (2)

While mourning the death of one of their own, Sarah returns as the team comes together to uncover who shot Warrick in the alleyway.

184 :09x02 - The Happy Place

When a hypnotist begins to use her powers to rob banks, she winds up being the lead suspect in a CSI murder investigation.

185 :09x03 - Art Imitates Life

After several victims are found dead while performing normal, everyday activities, the CSIs must find the reason as to why each of the victims remain upright after dying.

186 :09x04 - Let it Bleed

A murdered young woman who was tossed from a nightclub is found to have several blood types in her system during the CSI's investigation, and she is the daughter of a wanted drug lord by the FBI. The case becomes personal for Catherine when she discovers Lindsey was at the same nightclub with a fake ID.

187 :09x05 - Leave Out All the Rest

Gil seeks the knowledge of Lady Heather when the CSI's are thrust into the world of sexual domination for one upright man.

188 :09x06 - Say Uncle

A gangster style shooting in Koreatown leaves a man and woman dead and no witnesses will come forward. The prime suspect appears to be an Asian gang and a young boy, now missing and is part of a clinical trial, may be a key to the crime.

189 :09x07 - Woulda, Coulda, Shoulda

The CSIs investigate a murder case in which the prime suspect from a murder case that occurred 12 years prior is the main suspect.

190 :09x08 - Young Man with a Horn

The team discovers a shocking link between the death of a popular singer and a singer from 50 years ago.

191 :09x09 - 19 Down... (1)

Grissom stuns the staff when he announces he is leaving the CSI team, but a murder which appears linked to the infamous Dick and Jane Killer is what has their attention. A body is found dismembered in trash bags along the creek, which is a similar motto of the killer, but he is in jail. Grissom attends a class held by pathologist Raymond Langston, hoping it will give him insight to this case.

192 :09x10 - One to Go (2)

Grissom gets help from Dr. Raymond Langston, a criminal pathologist, as they work on solving a murder and kidnapping case. the crimes maybe linked to an imprisoned serial killer who attended a class which Langston taught and Grissom monitored. Grissom offers Langston a job on the team as he prepares to leave CSI for good.

193 :09x11 - The Grave Shift

A simple first day for Dr. Langston starts with a burglary case, but soon finds it overlapping into a complicated case of arson and homicide.

194 :09x12 - Disarmed and Dangerous

The CSI help the partner of a murdered undercover FBI agent track down his killer.

195 :09x13 - Deep Fried & Minty Fresh

A murder at a fast-food restaurant is the case investigated by Nick and Langston, however, the evidence is hard to collect when it is coated in cooking oil.

196 :09x14 - Miscarriage of Justice

As Langston testifies in the trial of a Congressman regarding the death of his mistress, the suicide of his aide using the weapon that murdered the woman leads to an even deeper investigation of the facts surrounding the case.

197 :09x15 - Kill Me If You Can

The CSIs investigate three different crimes. Though they seem to be unrelated at first, each case's evidence brings together a common link. First, an art dealer is found beaten to death, face down in the swimming pool of his rented mansion. Next, they investigate the shooting death of a Hollywood woman inside of a seedy motel. And lastly, they analyze the murder of a private investigator in a parking lot.

198 :09x16 - Turn, Turn, Turn

The episode is partly told in flashbacks as Nick is repeatedly called to a low-budget motel where a third murder has occurred over the course of a year, and where, unobviously, each murder impacts and ties to the next.

199 :09x17 - No Way Out

After a shootout occurs in a placid neighborhood cul-de-sac, the course of the investigation takes a potentially deadly turn when Langston and Riley encounter one of the missing shooters and are taken hostage.

200 :09x18 - Mascara

When a grad student, formerly one of Ray's charges as a professor, turns up dead, he takes a personal interest. The trail leads to the world of 'Luchadors', Mexican semi-pro wrestling, and the grad student's death may be the result of her investigations into the history of a serial killer. Did she find him in the Luchador world, only to be murdered by him?

201 :09x19 - The Descent of Man

The CSIs investigate an expert sky diver paralyzed after his chute failed to properly deploy. Several people are suspected, but when Catherine and Greg connect the skydiver to two dead people, the case becomes more complicated. Raymond looks into the death of the spiritual leader of a very small, very odd little cult while the leader was alone out in the middle of the desert on a trek.

202 :09x20 - A Space Oddity

When the producer of the reboot of a classic SF show (Yes -- think Star Trek) is murdered at a Las Vegas science-fiction convention (attended by both Hodges and Wendy -- both, unknown to each other, fans of the original show), they find a connection with each other as the team investigates the crime.

203 :09x21 - If I Had A Hammer

A convict, who has been in jail for 18 years based on evidence collected by Catherine in her very first solo case as a CSI, challenges his conviction for murder based on purportedly shoddy evidence by newer, more modern standards. The team opens up and re-investigates the case, applying new techniques and new eyes to very old situations and very old evidence. As one expects with CSI, things don't lead where anyone expected them to go.

204 :09x22 - The Gone Dead Train

When Al winds up with a third inexplicable death, he asks Catherine to investigate further despite the lack of a cause of death. When the mother of one of the victims also inexplicably dies, the cause points to an obscure, usually non-fatal disease, and a tattoo parlor run by a former coroner from Reno, Nevada. Meanwhile, Riley and Greg investigate the death of a woman who appears to have been raped, and her body dragged far from the scene.

205 :09x23 - Hog Heaven

When a 911 call summons police to a bar fight involving a motorcycle gang, it turns out that a dead gang member was actually an undercover cop. Piecing together the evidence, the team realizes that the reason for the death may have been that the officer's identity had been exposed. In the meantime, the investigation also exposes a connection between Det. Brass and the widow.

206 :09x24 - All In

For the season finale, the team investigates a body found in an empty patch at the edge of the city. Details identify two others present, and connections build up towards the cause relating to the casino chips for a defunct resort. Also, Ray has to make a split second decision in the heat of the action, and Nick heads off to an entomology conference.

207 :10x01 - Family Affair

When a rising young starlet is killed in an early morning traffic accident, an injured stalker found at the scene claims it was intentional on his part. Further investigation uncovers evidence that the stalker is not as culpable as he claims, and that another murder, elsewhere, is related. When it results in an attempt to steal a body, the CSIs take the case personally.

208 :10x02 - Ghost Town

The specter of serial killer Paul Millander once more intersects with the CSIs, as a former family neighborhood finds unwelcome buyers in the face of the economic downturn. When murders ensue, Millander's adopted son comes under suspicion. Meanwhile, Al and Ray deal with the mysterious case of someone whose internal organs were tied in a knot... without being removed.

209 :10x03 - Working Stiffs

When two unappreciated office workers for a casino decide to pull off a heist, it goes the way of all plans of mice and men, and goes astray... to murder. The CSIs work backwards from the murder to discover the plan

210 :10x04 - Coup de Grace

When an officer out of uniform is killed one night by a patrolman, the CSIs must determine if it was an accident or not. Complicating the case is the race of the victim, black, the race of the officer, white, the neighborhood of the shooting, largely black, witness testimony that the officer shot the victim when he was already down, and the prior bad history between the two officers.

211 :10x05 - Bloodsport

When a greatly successful, very loved and respected university football coach collapses outside his house, bloody and beaten, the gruesome interior of his home tells a story of rage unleashed. While Nick, Catherine, and Ray deal with that, Sarah and Greg investigate a body found in a car submerged six months before. The clues eventually tie the cases together along with a third cold case, but how and why are they related?

212 :10x06 - Death and the Maiden

A teenaged boy is brutally beaten in an alleyway, but refuses treatment or processing, making investigation of the crime complicated for Nick and Catherine. Meanwhile, Ray and Greg investigate a fire which was apparently set to hide a murder. Things get still more complicated when it turns out there is an apparent connection between the two events. Hodges also talks to Eckley to help Wendy make the switch from lab tech to fieldwork.

213 :10x07 - The Lost Girls

In this, the third and final part of the CSI crossover, Ray continues his search for Madeline Briggs. The search is interrupted when a local weather girl is found dead outside a hotel with her throat slashed, her purse filled with items suggesting she was involved in prostitution. When examination of the evidence connects her to Madeline, though, the case leads to two different pimps. Who killed the weather girl, and is it too late for Madeline?

214 :10x08 - Lover's Lanes

The tense finale of a bowling tournament is disrupted when a new meaning is formed for the term, "Heads will roll". The available suspects include the down-and-out friend, the distraught girlfriend, the local bowling expert, and the long-term successful pro. Which of them is guilty?

215 :10x09 - Appendicitement

A night starts strange and rapidly goes south from there, as Nick, Greg and Hodges "kidnap" Henry to celebrate his birthday at a desert hole-in-the-wall Bar-B-Q place. They start by getting run off the road, then finding a dead man with a raccoon attached to his face in the target restaurant... which was closed six months earlier by the health department. Meanwhile, back in Vegas, the rest of the crew experiences the same sort of strange, as they deal with a 911 call leading to a dead woman drowned in a bathtub, and an unconscious man with narcolepsy... and an extra body part.

216 :10x10 - Better Off Dead

A multiway shootout at a gun store involves an apparently bulletproof patron. At the same time, a young girl's body is found dumped by the roadside. And the two crimes are strangely connected to an apparent suicide pact.

217 :10x11 - Sin City Blue

When a man is caught dumping trash in a wildlife refuge, the CSIs are called in when the trash is found to include medical waste and a young man's body. Meanwhile, two young women on vacation together are found dead... in two different places and two different circumstances. Was it a single murderer, or did they fall afoul of two different killers?

218 :10x12 - Long Ball

When, in the middle of a high profile tournament, a legendary pro golfer's son beats his father's course record, but the father winds up dead the next day, the CSIs must delve into the complex relationship between son, step-mother, step-aunt, father, and the caddy the father had thrown off the pro tour 25 years before.

219 :10x13 - Internal Combustion

The case of two high school students, one dead and one missing, lead the CSIs into the underbelly of street racing and a tangled web of deadly competition.

220 :10x14 - Unshockable

When a band member of Rascal Flatts is electrocuted by his own guitar during a concert, the CSI team investigates if it was a case of foul play.

221 :10x15 - Neverland

The CSIs investigate the murder of a young boy and uncover evidence linking this death to an older case that now has resurfaced.

222 :10x16 - The Panty Sniffer

The CSIs investigate the murder of a casino hotels' events planner, and the investigation reveals her job of bringing in an unusual convention might have cost her her life. Meanwhile, two other hotel guests are suspicious when it turns out they are making and selling drugs to under-age partiers.

223 :10x17 - Irradiator

When the CSI team investigates the brutal murder of a family, they trace the killer to the house next door, which might belong to the "Dr. Jekyll" serial killer

224 :10x18 - Field Mice

When Hodges and Wendy take a group of high school CSI Explorer Scouts on a field trip, they embellish their role in solving cases and take their assignment a little bit too far

225 :10x19 - World's End

Catherine investigates when a student is found murdered at her daughter's school.

226 :10x20 - Take My Life, Please!

A legendary comic from the good old days of Las Vegas is set to reunite with his partner on stage for one night only, until one half of the famous duo is found dead

227 :10x21 - Lost & Found

A mother thought to be grieving for the loss of her family three years ago becomes a suspect in a CSI investigation

228 :10x22 - Doctor Who

The CSI team must investigate one of their own when Langston is accused by a former colleague of being part of the Dr. Jekyll murders,

229 :10x23 - Meat Jekyll

The CSI's lives are on the line as they close in on the elusive Dr. Jekyll, and more than one member of the team may not live to see his capture

230 :11x01 - Shock Waves

Langston fights for his life after being stabbed by psychopath Nate Haskell, while the other CSIs attend a funeral that turns deadly

231 :11x02 - Pool Shark

Hysteria ensues when a shark attacks a woman in the pool at a Las Vegas casino "day club," and the CSIs must determine if the killer is human or shark.

232 :11x03 - Blood Moon

A vampire and werewolf convention is at the heart of a murder investigation in Las Vegas

233 :11x04 - Sqweegel

Sqweegel, a serial killer who is punishing local heroes that harbor hidden secrets, is on the hunt in Las Vegas.

234 :11x05 - House of Hoarders

A woman who suffers from a condition called "hoarding" becomes a murder suspect when a dead body is found buried under piles of trash and debris inside her home.

235 :11x06 - Cold Blooded

When a college student ends up dead after a "Walking with Dinosaurs" show, the CSIs must determine if his death was murder or accidental

236 :11x07 - Bump and Grind

When the CSI team discovers the shredded remains of a man, they find themselves with multiple suspects who may be responsible for his death.

237 :11x08 - Fracked

Two men are murdered right before exposing a natural gas company for poisoning residents in a farming town, and the CSIs must discover who is responsible for their deaths.

238 :11x09 - Wild Life

A man's fatal fall from a hotel balcony launches the CSIs into an investigation to determine if his death was suicide or the result of foul play.

239 :11x10 - 418/427

The CSIs set out to track down a pedophile suspected of murdering an FBI agent's wife and kidnapping his children.

240 :11x11 - Man Up

The CSIs question the validity of an online picture depicting a murdered call girl until they find the same woman strangled to death in the dumpster that appears in the photo.

241 :11x12 - A Kiss Before Frying

The CSIs link a body with severe burn marks to possible execution by electric chair - and to a legendary Vegas murder. Meanwhile, Greg asks out Ellen, a pretty schoolteacher and forensics enthusiast who has been touring the crime lab

242 :11x13 - The Two Mrs. Grissoms

A night full of celebration ends with a bang when the director of a scholarship foundation for the deaf is killed by a deadly car bomb, prompting Sara to interrogate the students and faculty of the college where her mother-in-law works.

243 :11x14 - All That Cremains