Lilly Rush investigates a 1976 case involving a teenage girl that was beaten to death on a tennis court during a party at a well known estate.
Lilly is asked by the fiance of a fireman to help prove that a convicted felon, who is about to be paroled on an unrelated crime, is the murderer of the fireman's first wife.
A serial rapist is back in Philadelphia and sends a letter to the squad announcing his return after five years and that he plans to strike again.
An investigation gets re-opened after a woman with Alzheimer's begins having flashbacks of her murdered husband's death. Lilly's investigation gets harder when both Mitchell's son and daughter start demanding that she close the search for good.
Lilly reopens a 1973 murder case after a drug addict brings in an audio tape that she found that had a fatal shooting recorded on it.
Lily reviews the case of a man who has been falsely imprisoned for the murder of his then girlfriend a, high school track star.
A 1963 case about a young gay baseball player is reopened when his mother comes to town.
The case of a young woman who was thrown from a second story window. Putting her in a coma and killing her daughter is reopened.
Lily gets a cryptic call from a man claiming to have murdered his grandmother in 1989. This call starts a chain of events that leaves Lily in a very dangerous position.
The case of a teenager who was shot while hitchhiking from Atlanta to Philadelphia.
A professor who's career ended in disgrace asks Lily to reopen the case that lead to his downfall.
Lily and Scotty look into the 1980 case of an eight year old boy found dead in an alley snow drift.
The case of a 1935 black woman who was murdered and assumed to be a prostitute is reopened at the behest of the granddaughter she never new.
Lilly and Scotty reopen the 1958 case of an orphan found dead in a field. While investigating a strange connection between the boy and the nuns who cared for him is discovered.
A young man thought to have died in a disco fire is reopened after evidence suggest the man was shot before burning.
When the skeletal remains of a couple are discovered under the foundation of an old building. The case progression leads Lily to believe the two may have been professionally killed.
When a prominent high-school basketball player gets a death threat. Lily reopens the case of his father who was murdered after receiving a similar letter.
A drunk driver's hit-and-run confession leads the detectives to discover that foul play may have killed the victim.
The 1992 murder of a woman on her way home from the Democratic National Convention. Leads the detectives to a present day Congressman and his sister.
The 1985 case of a wealthy stockbroker is reopened. Originally thought to have died during a car-jacking new evidence suggest otherwise.
The 1989 murder of a woman is reopened when the only witness her son starts to show behavioral problems.
An anonymous letter claims that the death of a well known swim coach at a local military school, may not have been the accident it was previously thought.
DNA evidence prompts Lily to reopen the case of a fifteen year old girl when her convicted murderer is exonerated.
Lily is forced to re-investigate her first case a mass murder at a once popular diner.
The 1943 case of a factory worker who died under suspicious circumstances is reopened. When a friend of the victim revels a connection between her and an obsessive manager.
The missing persons case of a woman who disappeared in 1978 is reopened when a film of her murder is found.
When bones are found at the excavation site of a former prison. The 1968 case of a prisoner who went missing during Johnny Cash's famous Folsom Prison concert is reopened.
In 1991 the Cambodian parents of Kara were murdered in cold blood. Kara was 6 years old at the time and always wanted to find out who the killers were. Now that she discovered a priceless armband of her mother's on E-Bay, she begs the detectives to find out who the seller was.
The case of Rita Baxter is reopened when a body having the same secret markings that were on her. Is discovered in a park by local sheriffs.
The case of a man who was murdered in 1983 is reopened at the behest of his former partner. Upon further investigation it's found that he was an outspoken aids awareness activist and was disowned by his wealthy family because of his sexuality.
The son of a man murdered in 1953 asks for his case to be reopened. It's learned that the victim was in danger due to his supposed membership with the Communist Party of America.
When a body is found in a wildlife preserve it mirrors a case from 1985. It's then discovered that eight more victims died in the same fashion and that an unknown psychopath may not be the killer.
The 2000 murder of a young Puerto Rican District Attorney is reopened at his widow's request. Scotty takes the lead and must navigate a sea of embezzlement and gay prostitution to find the truth about this community hero.
The 1978 death of a cult member is re-examined when a new death under similar circumstances occurs. A de-programmer who worked with the 1978 victim is now accused in this recent case. Meanwhile Valens must deal with his own tragedy.
A boxing referee makes a death-bed confession that prompts the team to re-open the 1976 case of a boxer who died after a match.
When the murder weapon of a little girl shot in a drive-by in 1987 turns up. The crew investigates and finds the motive may have been closer to the child then first thought.
The case of Ellie McCormick is re-opened after her brother finds enough evidence for a second look.
The death of a mentally disabled child in 1993 is re-opened after drawings depicting his death are found at his grave.
A priest comes forward with information about the 1998 kidnapping of a young boy reopening the case.
The 1982 murder of a Philadelphia socialite is reopened when her wedding ring is found at a crime scene.
A former love interest of Nick's prompts the team to reopen the 1995 case of her murdered sister.
The 1963 murder of a young man whose corpse was discovered by Jeffries as a child is reopened.
When a parolee confesses to stealing money from a murdered factory worker his case is reopened.
When a serial killer is about to be released from prison the 1977 murder of a man after the premiere of The Rocky Horror Picture Show is reopened.
The 1932 case of a young woman who went missing is reopened after a truck with human remains is pulled from the Delaware river.
The discovery of nine human skulls leads the team to focus their attention back on George Marks. The suspected serial killer who walked out of homicide a free man due to lack of evidence.
A girl is contacted by a man claiming to be her father, prompting Detective Lilly Rush to reopen the case of a teenage boy who was killed on the same night the girl was born.
The death of a young woman at a fraternity is reopened when a picture of her appearing to be in distress surfaces.
The 1978 murder case of a man is reopened when a letter suggest his death may not have been connected to a similar crime, as originally thought.
The 1945 death of a baseball player is reopened when new evidence comes to light.
An elderly woman is found dead living under the identity of a woman who died in 1954. Upon hearing this news the son of the woman prompts her case to be reopened.
When the fourth of five brothers is killed Lily reopens the case of the first brother's death. She believes the cases are connected and she is trying to save the youngest brother from the same fate.
A diary discovered on a recycled computer leads Lilly to reopen the 1999 death of a healthy young woman from a stress-induced heart attack.
A box of POW bracelets found in an abandoned drug house lead Lilly and the team to reopen the 1972 shooting of a Vietnam veteran.
Danny and Lilly reopen the 2001 case revolving around a well liked local deli owner thought beaten to death by his employee.
In 1988, a young man is gunned down on a highway after his car is hit from behind and a woman riding with him is wounded. The case was thought to be a routine carjacking until the woman disappeared from the hospital where she was being treated.
When a small piece of a note is found, Lilly and the team reopen the 1994 death of a teenager previously classified as a suicide.
Lillian begs Lilly and the team to search for her daughter's killer when a newspaper story reports on a man pushing his wife down the stairs. The circumstances of that death seem eerily similar to her daughter's, and the same man was her escort to the 1968 debutante ball.
Lilly finds a link from a recent string of bank robberies where the thieves wore Johnny Cash masks that may provide new information on the murder of a young bank teller who was killed during an almost identical robbery in the year 2000. However, Lilly's trail runs cold and now the team must retrace each step of the 2000 case in order to find the killer at large.
In 1998, Valens worked undercover on a high-profile drug case that is reopened and now he must face the demons that have been haunting him for the past eight years. Valens got too close to a lady friend that was being used as a drug mule and it might have cost her life. The entire squad is shocked to know that Valens went undercover and had never mentioned it to anyone, which casts an even darker cloud upon him.
In the course of one night, the team is pushed to their wit's end trying to crack the code of a killer and rescue a boy left to die at an undisclosed location. In the end, the answer will lie in one man's past and the only way to get there is for Lilly and the team to delve deep into their own.
Lilly receives new evidence in the 1973 murder of a young female college tennis star. Who beat the college's best male player in a high-profile match that might have cost her her life.
When a theater owner discovers a .38 slug in a piece of set furniture that is not being used as a prop, Lilly and Jeffries reinvestigate the 2002 case labeled the "Cabaret Murder," which involved the shooting of a local cabaret singer.
In 2002, Dennis Hofferman joined a community theater as a cabaret singer, but on opening night he never made it to the stage to "break a leg." Instead, he was shot to death directly outside the backstage door. His murder was considered one of several shootings and muggings committed by local robbers who were never caught, however, all evidence pointed to someone inside the theater. Most of Dennis' theater friends called it the greed-eyed monster that killed him and now Lilly and Jeffries begin their quest to catch a killer.
When a pregnant woman researching her family history comes across disturbing news that her great grandmother, Violet Polley, was murdered and the case was never solved, Lilly tackles the 1929 case, her oldest to date.
While the team is dealing with massive case backlog, they roll up their sleeves and dust off the few notes from the crime which only reveal that Violet Polley was from the wrong side of the tracks and became pregnant by a man, Nick Bartleby, who was considered royalty. Most, if not all, of the suspects from 1929 are either dead or their memories aren't reliable, however, they find the grandson of Bartleby's driver and discover recorded tapes that might lead her in the direction of the murderer. Meanwhile, Lilly's mother, Ellen (guest star Meredith Baxter), announces her engagement and wants nothing more than her daughter to stand beside her during the ceremony.
The 1994 rape and murder of a 16-year-old girl is re-investigated after a death-row inmate convicted of the crimes who is scheduled to be executed in three days calls Jeffries claiming that he's innocent. His statement is given weight by the fact that the arresting officer in the case just committed suicide during the course of an Internal Affairs investigation.
Lilly and the team tackle a 1945 case involving an ambitious reporter recently demoted to writing trivial advice columns after a heady period covering Eleanor Roosevelt and women's rights.
A new witness to the 1984 shooting of a well known ER physician comes forward prompting Lilly and the squad reopen the case.
When a drug counselor's debit card is used one year after his death Lilly and the team reopen the 2005 case.
The 1995 case of two teenage boys who committed suicide after going on a murderous rampage. Is re-opened when evidence shows there may have been a third shooter.
The 2004 case involving the disappearance of a female Iraqi war vet. Is re-opened when her prosthetic arm is found in a river.
The 1948 death of a miner is investigated after workers find his body in a service tunnel five stories below a river while expanding the subway system. The team discovers that the man was a union leader who butted heads with management in a labor dispute.
A 6-month-old girl's 1982 death, originally ruled to be a result of sudden-infant-death syndrome, is investigated when new evidence reveals the baby may have drowned.
The parents of an autistic boy are gunned down in their car while on their way to get takeout. The 2003 case is reopened when Joseph informs Lilly. That the boy blurts out a specific number whenever the parents are mentioned.
When the 1958 suicide of DJ Jimmy "The Hawk" Hawkins is discovered to have been a murder. Lilly and the team must find the truth of this public persona's private life by decoding a message hidden in his final broadcast.
The 1979 murder of a schoolteacher is reopened when the victim's bloodstained jacket is found stuffed in a tree trunk.
The 1975 disappearance of an 8-year-old girl who was never found is re-investigated after a note written by the girl shortly before she vanished turns up.
The 1989 case of a homely 33-year-old woman who was gunned down in an alley is re-opened. When a tape of her dating service profile is found in a suicide victim and suspect in a series of murders home.
A case from 1968 is reopened concerning the murder of a policeman. Originally thought of as a drug bust gone wrong, new evidence may lead to the victim as having an affair with his partner.
Lilly and Valens travel to Nashville and Knoxville to investigate the 2000 murder of a country-music singer. Who was gunned down outside of a Philadelphia bar where he and his band had recently played.
Lilly investigates the murder of a 17-year-old prep-school student who disappeared in early 2006 and whose body is found stuffed in an oil drum outside an abandoned warehouse.
Lilly investigates the 1996 murder of a wealthy divorced woman who was found dead in her ex-husband's indoor swimming pool.
Two teens are both shot to death on the same day in 2002 at 8:03 AM. The cases haunt Miller because it's the fifth anniversary of the shootings and she was the one who found the dying boy.
Lilly investigates the deaths of a married couple who perished in 1981 when a supposedly accidental gas-leak explosion set their house on fire. The case is reopened when fragments of a bomb are discovered at the house during renovations.
Lily reopens a case involving the death of a teenager in 1964 after having given birth in a home for unwed mothers.
When the body of a missing teen-aged boy is found in a dumpster, the cold case team delves into the world of theater dance and discovers the secret that got the boy killed.
At the request of her daughter the case of a woman found in her car at the bottom of a lake is reopened.
The 1985 death of boy is reopened after his father starts killing pedophiles demanding the true killer be brought to justice.
The 1997 murder of a 16-year-old girl is investigated after an anonymous confession is discovered in a modern-art exhibit. The probe leads the detectives into the cutthroat world of high-school cheer-leading.
The case of a woman who died in 1919 is reopened at the urging of the local Historical Society. They inform Lily that the dead woman was heavily involved in the woman's suffrage movement and may have been the motivation for her murder.
The 2005 case of man found dead in hotel is reopened after he is linked to the Russian Mob.
The 1998 death of a terminally ill man is reopened after a nurse claims to have euthanized six patients.
The season four finale focuses on the 2006 murder of a entire family which had just moved into a new home. During the investigation the whole team is taken hostage.
After an absence from work due to her shooting. Lily returns to work and investigates the 1994 case of three murdered children.
The 1998 case of a girl who was found murdered is reopened after an article of her clothing is discovered.
The 2006 murder of an Amish teen who left home to visit Philadelphia as part of rumspringa, an Amish rite of passage, is reinvestigated when the victim's sister arrives to look for her.
The unsolved 1953 murder of an aspiring 19-year-old rock-and-roll singer is re-investigated after new evidence indicates he was killed in his uncle's five-and-dime store and not in an alley behind a blues club where his body was found.
An unidentified woman who has been in a coma since she was shot in 1989, dies. Her unsolved case is reinvestigated and it's learned that she was a grifter who had a male partner and many vengeful victims.
The 2002 unsolved murder of a 14-year-old inner-city math genius is re-investigated. The victim was shot after his 16-year-old half brother exploited the boy's abilities, such as counting cards and opening safes, for illegal gain with a local gang.
The murder of a woman who vanished in 1938 during Orson Welles' “War of the Worlds” radio broadcast is investigated when her body turns up in a well. The probe reveals the victim's family prepared to outrun the aliens they believed were invading the U.S.
A set of storage units, both owned by the same person, holds the missing bodies of three boys who had disappeared between 1999 and 2003. Additionally, another unit holds the body of a newly missing boy.
Was a 1963 death of a teenage girl, who dressed and acted like a male, a murder or possibly a suicide. Meanwhile, Valens Internal Affairs probe results are revealed.
The 1982 murder of a popular college student is reinvestigated after “rapist” is written on the dead man's gravestone. The probe reveals the victim was accused of date-rape by several former students before he was fatally shot, but their initial complaints were ignored by the police and the college-administration staff.
The investigation of a murdered Japanese-American man who had moved his family to Philadelphia after their release from an internment camp in 1945. Also, Lily tries to get Stillman to change his mind about retiring.
After five years of silence a serial bomber strikes again and the team rushes to stop his killing spree.
After a drunken father is arrested for beating up his 3-year old daughter, a murder case of a 17 year old from 1998 is reopened. Although the dad is shown as having abused her, it is also revealed that she ran away from home with a neo-nazi, ex con just before she died.
Th body of a deaf teen, thought missing since 2006 is believed to have been murdered after blood droplets is found in a storage shed at the school for the deaf he had attended.
A suspected murderer is escorted back from West Virginia to Philadelphia by Lily and Valens. The man is suspected of having abducted and killed a woman who was attending her own engagement party.
A drug bust uncovers a severed hand belonging to an ex-con who was murdered in 1997. The drug dealer claims he found the dead body and removed his hand to sell his fingerprints, and later dumped his body.
New evidence is brought in by the granddaughter of a woman who was thought of having committed suicide back in 1962, leaning the case towards a possible murder.
A former drug addict claims to have seen her son playing in a park, although he was reported as having perished in an apartment fire three years earlier.
The 1973 death of a football player is reopened and allegations of steroid use arise.
The death of an inner-city school teacher is given a second look when a former student finds her car keys in an old desk.
The 1964 murder of a woman who used Tupperware parties as a front for civil rights work Is reopened at the behest of her daughter after she finds evidence of her mothers secret life.
The 1978 murder of a girl part of the roller skating scene is reopened when an informant comes forward. Meanwhile Det. Miller has a hard time readjusting to the dating scene.
When human remains and dog tags are found in a hazardous disposal drum. The 1951 disappearance of a marine is reopened.
The 1981 case of a woman who disappeared is reopened when her remains are found in the trunk of a car at a junkyard.
When an unidentified man turns in a 44 year old rocket to a local police station. The 1964 murder of boy who's body was found the day after the first moon landing is reopened.
Lilly and the team look into a 1989 case involving a Russian opera singer. Vera has a strong recollection of the case being a rookie in the department at the time.
When a photo taken in 1953 is uncovered, it provides new evidence to open a case involving a pin-up girl.
The team reopens a 2005 murder case involving an African-American politician who worked to reduce crime in the neighborhood he grew up in.
When remains are discovered in a building being remodeled. The case of a stewardess who disappeared in 1960 is reopened.
When the mother of a missing team storms into station. The case of a witness protection member is reopened when his body is identified by the missing teen.
The 1976 murder of a teen-aged girl is reopened when her father produces a photo of her and a vicious biker gang.
The friend of an ex-mental patient whose doctor died in a fire. Prompts the team to reopen the doctors death when he realizes his friend is still alive.
A former employee at a socialite club comes forward with an alternative theory of a murder victims whereabouts the night of his death and the 1958 murder is reopened.
The murder of a Cuban baseball star, who came to the U.S. to provide for his family, is investigated. Meanwhile, the team plays their annual softball game
The team investigates the 1963 murder of a pool hustler after the long-disappeared murder weapon is found during the renovation of a pool hall.
The team investigates the 2005 murder of a female cadet at a local military school. They soon uncover that she was abused by several male cadets and school administrators.
As the team continues to search for the suspect in the killing of a female cadet, Rush must relive her own difficult past.
The 1966 case of woman believed lost at sea due to suicide is reopened when her remains are discovered. Meanwhile the trial of the man who attempted to kill Detective Rush begins.
The 1995 murder of an unidentified runaway is reopened when his brother presents proof of his identity.
The team reopens the 2004 case of a teen who was wrongly sent to a juvenile detention center where he was killed and before Valens could make good on his promise to get him released.
The death of a musician in 1970 is investigated and Lilly meets her step-brother Finn who is a teenager.
The 1944 murder of the pilot from the WASP program (Civilian women who volunteered to fly missions for the United States Army Air Core) is investigated.
After uncovering his remains the case of a 45 year old jockey is reopened who planned to retire after a big race.
The team explores the 1991 case of a 14-year-old girl who died after being sent to a new foster family and was poised to be an upcoming rap music star.
The 1983 case of a Chinese-American teenager who was murdered trying to get justice for his slain girlfriend is reopened.
The case of a champion debater is reopened after a current student from his school shows a letter threatening his life.
The team investigates the 1980 case of a local hockey player who was murdered on the historic day the U.S. national hockey team beat the Soviet Union during the Olympics.
The team re-opens the murder case of a Army recruiter when a soldier he recruited provides an alibi for him. Earlier believed to have been the person murdered for stolen jewelry.
The 1974 murder of a private investigator is reopened after discoveries about his last clients are uncovered.
The 1983 murder of a graffiti artist is reopened and meanwhile Rush, Miller, and Valen's all have personal and legal troubles to contend with.
The team re-opens the 1971 death of a teenage circus aerialist whose fall during mid-act might have been the result of foul play. Meanwhile, Rush uncovers what might be potential charges for another case.
While guest at a wedding the team begins to investigate the bride and whether she was responsible for killing her first fiancé.
The team reopens the case of a dock worker who was moonlighting as an indy-circuit wrestler who was murdered in 1986, and Valens looks into a lead on the man who mugged and raped his mother.
After Vera goes missing in an attempt to find him. An arson case he worked in 2006 is reopened and discovered to be the reason for his odd behavior for the last few weeks.
A recent murder case of Rush's is reopened when a former detective turned FBI agent and friend of Stillman's links a bullet from the crime to a 1980 homicide.
Lily and the FBI continue to search for the sniper after discovering his identity and work to protect his next intended victims.
The 1969 case of a GI who was on leave during the Woodstock concert is reopened at the FBI's behest. Meanwhile agent Rush and Lily find a mutual attraction they have for each other.
The 1989 case of a prom queen who may have been intentionally killed in a hit-and-run reopened and Rush contemplates her father's requests to give her sister another chance.
Valens and Rush after gaining a lead attempt to rescue Lily's sister. Meanwhile Jeffries tries to bring justice to a mother whose daughter's murder case has remained unsolved for 17 years