Special Agent Dana Scully is partnered with Special Agent Fox Mulder to validate his work in a division called The X-Files. While he is a believer in the paranormal, due to memories in which his sister was abducted by aliens, she is a skeptic and a scientist who prefers to look for rational, logical explanations.
After a number of Oregon high school teens begin to die mysteriously, Agents Scully and Mulder are called to investigate the matter. Mulder believes those murders are linked to alien abduction.
An Idaho woman's call to the FBI about her missing Air Force husband goes unanswered by the Boise field office and Mulder, who has been watching the case, and Scully head to Ellens Airbase to find answers for her.
A former FBI Academy classmate of Scully's asks her for help on a case: Several murders have occurred where the victim's liver has been ripped out, yet there is no indication of an entry point to the place where the person had been murdered. Scully asks Mulder to assist them on the case and, despite his reputation in the Bureau, he agrees.
When a young girl from Iowa mysteriously vanishes without a trace, Mulder must once again confront his own feelings and fears about his younger sister's disappearance.
Mulder and Scully investigate a series of murders that are very similar in detail to a murder committed in 1947, believed to be committed by a half-man/half-beast dubbed the Jersey Devil.
An unseen force commits several murders wherever a young woman is present and Mulder suspects that it is the doing of the woman's former boss, who had recently committed suicide.
In order to preserve its existence, a computer begins to kill people when it is deemed to be inefficient to continue controlling the workings of an office building.
When an Arctic research team mysteriously begins to kill each other after drilling deeper into the ice than ever before, Mulder and Scully accompany a team of doctors and scientists to investigate the matter. They discover a new organism which can make the host become murderous by amplifying the host's feeling of anger and paranoia.
Something is sabotaging a space launch program. And every discriminating clue is pointing at the commander of the team, who once claimed to have seen an alien in space while witnessing Mars from Earth orbit.
With information obtained from Deep Throat, Mulder heads to Townsend, Wisconsin, to find evidence of a downed alien spacecraft before the military cleans up the area. While there, he meets Max Fenig, whose compatriots at the UFO organization NICAP have been following Mulder's work on the X-Files.
An exanguination of a Greenwich, Connecticut, man leads Mulder to believe that aliens performed the task. Scully and he talk to the man's little girl, who gives them an unusual account. At the same time, a similar exanguination in San Francisco turns up another young girl who looks exactly like the girl in Greenwich.
An old Oxford University classmate and girlfriend of Mulder's asks for his help in investigating an international case in which several British dignitaries were executed. In their investigation, Mulder and Scully encounter an assassin who has the ability to start fires using only his mind.
While investigating a kidnapping case, Scully and Mulder encounter a death row inmate (Luther Lee Boggs) who claims to have psychic abilities. He informs the agents he will help solve the case if his sentence is reduced. Scully becomes an unwilling believer when Boggs tells her that she can communicate through him with her recently deceased father.
Scully and Mulder look for answers to a bizarre series of murders in which all the victims died during sex. Their investigations lead them to an Amish-type community in Massachusetts.
After a FBI Agent and a bank robber are both shot during a bank heist, the FBI agent starts to take on the persona of the late bank robber when he was brought back to life. Mulder suspects that the bank robber, Warren Dupre has come back to life in Agent Jack Willis' body.
John Barnett, who supposedly died years ago in prison, comes back to haunt the person who has put him in jail - Mulder. Sending the agent personal notes, Barnett taunts Mulder to try and catch him.
Scully and Mulder discover evidence of a government cover-up after they learn of an unidentified flying object that was shot down in Iraq had been secretly transported to the United States.
The agents investigate a young faith healer named Samuel, who has the power to heal people with his touch, but he begins to question his gift when those he has healed, start to die.
Mulder and Scully travel to a Montana Indian Reservation to investigate several strange deaths caused by an unknown beast-like creature and may have been the legendary Manitou, a man who can shape shift into a beast.
When a group of loggers in Olympic National Forest disappear in the same way that another group disappeared 60 years ago, Mulder, who has been watching the case and has requested the assignment, brings his partner to the remote wilderness of Washington State. Along with a forest ranger and a representative from the logging company, Mulder and Scully find the deserted logging base camp and a large cocoon that contains the desicated remains of a human being.
Despite Mulder's testimony at his parole hearing, Eugene Victor Tooms, a serial killer who extracts and eats human liver, (from the episode "Squeeze") is released from prison. Making sure that Tooms doesn't kill again, Mulder and Scully keep tabs on him. At the same time, Scully is called before Assistant Director Walter Skinner to explain to him her work with Mulder on the X-Files.
A series of murders, which mirror the work of a dead serial killer, are all linked to an eight-year-old girl. Mulder believes that she may be the reincarnation of a policeman murdered by his colleagues and is now back for revenge.
Mulder and Scully investigate the murders of two rocket scientists, all of which are linked to a severely handicapped janitor named Roland. Mulder suspects that another recently deceased scientist, whose head is cryogenically frozen, is controlling Roland telepathically from beyond the grave.
Deep Throat directs Mulder to a crime scene where police are looking for a suspect who evaded capture and jumped into the river near an industrial area. Finding that evidence has been covered up, Mulder and Scully question a doctor whose car the suspect had driven on a high-speed chase with police. Later, the doctor is murdered by a man who was investigating the crime scene at the behest of an unknown agency.
This episode shows the character history of Mulder and Scully. Other important characters such as Skinner, X, Deep Throat and Cigarette Smoking Man are also shown.
The X-Files have now been officially closed down and Mulder and Scully have been reassigned to different positions. Scully has been assigned as an instructor at the FBI Academy while Mulder is doing menial surveillance work. It is at this time that Mulder is contacted by his friend in the Senate who tells him to go to Puerto Rico to find evidence of alien contact at the large satellite array located there.
When several men are found dead in New Jersey with the same strange looking bite marks on their bodies, Skinner orders Mulder to investigate. Mulder discovers a genetically mutated creature that is stalking its victims in Newark's underground sewer system.
In a small western Pennsylvania town, several mild mannered residents suddenly go berserk. Mulder believes that it is more than coincidence when he investigates claims that the suspects receive written messages to kill in their digital displays of their household appliances.
Via a new source, Mulder receives a tape of a 911 call made by a man in New York City who said that his Lexington Avenue apartment building was on fire. The apartment buidling, however, had not caught on fire, yet the man had died from internal injuries associated with being burned in a fire. Mulder tries to open a case file on it, but is beaten to the punch by another agent, and his new partner, Alex Krychek.
Mulder and Krychek are sent to a hostage situation in which a man named Duane Barry is holding his psychiatrist and several travel agency employees at gunpoint. Mulder is assigned to the negotiations because Barry has claimed that he is being controlled by aliens.
While leaving a message on Mulder's answering machine, Scully is attacked and kidnapped by Duane Barry. Mulder is taken off the case by AD Skinner, but he continues to search for evidence to figure out where Duane Barry is going before it's too late.
The X-Files have been reopened and Agent Mulder flies to Hollywood to investigate a series of vampire like murders in which victims are drained of their blood and puncture wounds are found on their bodies. Mulder meets and falls for a mysterious woman although, she is a prime suspect.
Scully mysteriously reappears in a Washington hospital, alive but in a coma. Knowing that she had signed a last will and testament wishing to end her life if she was in such a state, Mulder works against the clock and looks for evidence on who did this to his partner and how he bring her out of the coma.
With Scully back in the X-Files, Mulder and her flies to the site of an erupting volcano in Oregon to investigate the mysterious disappearances of several scientist who were studying the volcano. Mulder and Scully discover a deadly life form that can survive in the searing heat of the crater and is killing the scientists to avoid being discovered.
Mulder and Scully fly to a meat processing community in Wisconsin to investigate the disappearances of several local children who reappear hours later and have no idea of what had happened to them. The local sheriff immediately takes them to a Christian sect located nearby whose members are all vegetarians.
Mulder and Scully investigates strange occurrences in an old-age care home when one of the nurses is attacked by unseen supernatural forces. Both agents come in contact with the unseen forces, which seem to surround several elderly residents.
A young female police detective, who has been having visions of an unknown murder, inexplicably discovers a body buried in a remote field that belongs to an FBI agent killed over 40 years ago. As the detective continues to have visions, Mulder and Scully trace the agent's movements to an investigation into a murderer who had been put away for attacking a woman fifty years ago.
A female corpse, dug-up and mutilated, is brought to Mulder's attention by a Minnesota agent claiming it as the work of aliens. Mulder, however, suspects the desecration is done by a fetishist and has the agent put out a warning to all law enforcement agencies in the area. At the same time, Scully begins to feel intensely uncomfortable with the work of the predator and his prey.
Some teenagers feign an occult ritual in an attempt to score, but cause the death of one of them instead. Mulder and Scully are called in to investigate, but the town's real worshippers attempt to hide their tracks.
When a soldier who was stationed at a resettlement camp for Haitians, drove himself into a tree, Mulder and Scully are called to investigate by the grieving wife. Mulder and Scully then, found themselves in the middle of a secret war between the camp commander and a Voodoo priest.
A newspaper ad placed to locate a certain doctor sets off the murder of several people with the same face. When Scully and Mulder locate another look-alike, they must reach him before the killer does. Meanwhile, Mulder is distracted from the case with the sudden reappearance of his sister Samantha.
Impersonating Mulder, the Bounty Hunter takes Scully as his hostage. Mulder and Samantha nervously wait for him to contact Mulder to make a trade: Samanta for Scully. Mulder, however, does not want to lose either of them and goes to Skinner for help.
The death of a federal construction worker and the destruction of various properties can only be tied to an escaped elephant. Yet, no witnesses claim to have seen the animal.
The crews of a Navy ship, who have abandoned their boat in a life raft, were rescued 18 hours later. But all of these sailors appear to have aged many decades in the course of days. Mulder suggests that the ship is caught in a time field which is speeding up their aging.
Mulder and Scully are called in to investigate the unexplainable death of a retired escape artist in a town populated almost entirely by former circus and side-show acts. When more murders are committed, they find themselves racing against time.
Mulder and Scully investigate the death of a young boy who Mulder believes was lured to his death by an unseen force while the boy's Romanian grandmother claims the child was evil.
When a package sent to a convict at a prison facility unleashes a deadly sickness that kills a dozen men, Scully is called in to investigate the quarantined area, while Mulder tracks two escapees who may be carrying and unknowingly spreading the disease.
Mulder and Scully investigate on a case where a residue was all that was left of a victim's body. Their investigation takes them to a chemical testing plant where a physics doctor who was involved in a freak accident, has now turns his shadow into a deadly weapon.
An FDA inspector has been reported missing and the case is given to Mulder and Scully. Scully feels that the FBI hierarchy is giving them an assignment unrelated to the X-Files, but Mulder believes that there is more to the case. Venturing to Arkansas, where the FDA inspector was reviewing the conditions at a chicken processing plant, the partners find evidence of foul play.
When an amateur hacker obtains some top secret government files, a chain of events is set in motion that threatens the lives of agents Mudler and Scully and causes them to question their sanity.
With Mulder presumed dead, Scully returns to Washington for a hearing on her conduct. Unfortunately for her, she is summarily suspended without pay or benefits from the FBI. In New Mexico, the Navajo who led Mulder to the alien bodies in the boxcar find the agent buried under rocks in the quarry near the car. It is there that they begin the ceremony to heal Mulder.
After Mulder and Scully are reunited, Scully's sister is shot, and meeting with the Lone Gunmen leads them to a patriated Nazi who worked with Mulder's father. Meanwhile, Skinner negotiates for their lives with the Cigarette Smoking Man.
A series of bizarre lightning deaths brings Mulder and Scully to a midwestern town. The prime suspect is a teenage boy who has recently survived a lightning strike.
In the course of tracking a serial killer preying upon fortune tellers, Mulder and Scully enlist the help of a man whom Mulder believes to have the ability to foresee how people will die. The psychic has visions of Mulder's death.
Mulder and Scully investigate a string of killings by a death-row inmate that occur after his execution.
Mulder and Scully investigate a string of killings by a death-row inmate that occur after his execution.
Mulder and Scully visit a military hospital to investigate a suicidal man, and the mysterious force preventing his death.
A kidnapping investigation leads Mulder and Scully to a woman who may have a psychic link to the victim.
Mulder and Scully stumble upon another government conspiracy to hide the truth about extraterrestrial life after Mulder uncovers a video of an alien autopsy.
Mulder enters the train carrying the boxcar he's been looking for. Meanwhile, Scully learns more about her mysterious implant.
Mulder and Scully are assigned to protect a boy who is displaying inexplicable wounds of religious significance.
Mulder investigates a series of deaths that may be linked to killer cockroaches.
Mulder and Scully are called in to investigate a series of bizarre small-town deaths that seem to be linked to strange astrological phenomena.
Mulder and Scully, together with Mulder's former mentor are investigating a case involving a serial killer who claims to be possessed by a demonic force. Although, the suspect is apprehended but the murders continue.
A French salvage operation in the Pacific Ocean goes awry when the team discovers an unknown entity. Mulder soon learns that the entire team has been relocated to the San Diego Naval Hospital for treatment of radiation burns. Their ship, the Piper Maru, had been searching for something in the exact same area that the vessel, the Talapus, had been seen on satellite photos a few months back ("Nisei"). Mulder and Scully head to the west coast to investigate.
Mulder returns from Hong Kong with Krychek in tow. However, they are attacked by unknown agents and Krychek manages to escape while Mulder finds himself in a hospital. Meanwhile, Skinner is also admitted to the hospital suffering from a gunshot wound fired by a man who is working for the group that wants Scully's sister's murder investigation to end.
Mulder and Scully are challenged by a man who seems to have the ability to control others. He leaves clues for Mulder and Scully to follow as he sets up his contest of wills.
An ancient artifact, which was brought to Boston from an excavation site in South America, is believed to be linked to a series of deaths. While Scully suspects that political terrorism may be behind the murders, Mulder believes in something far more sinister.
Mulder and Scully are called in to San Francisco's Chinatown to investigate the deaths of several Chinese men found to be missing vital internal organs.
When a couple claims to have been abducted by aliens, Mulder and Scully try to find out the truth, but it turns out to be impossible task since everyone has a different version of the story.
Skinner is accused of murder. Mulder and Scully tried to help him clear his name. Both of them discovered that there is a conspiracy to prevent them from finding out the truth.
Mulder and Scully are called in to investigate a series of mysterious deaths and disappearances near a lake in a small town. Mulder believes that the local legend about a lake monster may be all too real.
This episode shows highlights from several episodes which include the abduction of Scully and Mulder's sister.
Mulder receives a tip from an unknown informant about a case where a man murdered several people, believing that all of them were the same person. In the same neighborhood several weeks prior, a similar murder scenario had occurred. When Mulder and Scully investigate the man's house, they find hundreds of VHS tapes with cable program recorded on them.
A hostage situation in a fast food restaurant is quickly resolved when a man steps forward to heal the gunshot wound of one of the victims. When police arrive, the man who healed the victim is interviewed by the detective in charge, but the man then mysteriously vanishes.
Before Jeremiah Smith can give Mulder and Scully any information, the bounty hunter arrives and comes after Smith. Mulder and Smith manage to escape and head to a secret facility located in Alberta, Canada. Meanwhile, the alien, who held Scully prisoner until Mulder phoned her, continues his hunt.
Mulder and Scully travel to a bucolic small town where a baby with birth defects is found buried alive in shallow ground. Mulder and Scully follow the trail of evidence to a reclusive family who has a history of inbreeding.
The mysterious deaths of several African-American men, in which the color from their skin is drained, leads Mulder to believe that the Teliko, an African folktale about a creature who must suck the pigmentation from a person's body in order to survive, is behind those murders.
Mulder and Scully investigate the bizarre abduction of several young women that are linked to some distorted photographs.
Mulder is searching for an informant inside a cult compound, but he met Melissa, a cultist who claims to have known him in a previous life during the American Civil War instead.
When a doctor loses control and kills a patient on the operating table, Mulder and Scully begins to suspect a supernatural force may be responsible.
Frohike informs Mulder and Scully about the Cigarette Smoking Man's background. He was a young captain in the US Army recruited to assassinate President Kennedy and then became the mysterious man in a global conspiracy.
Mulder receives information about a militant group that is collecting material to make a highly explosive weapon. An assault team breaks up the group and, during the raid, Mulder and Scully find Alex Krychek, who supplied Mulder covertly with the information on the group. With the traitor's help, the agents are able to obtain a diplomatic pouch containing a rock pulled from the ground in the Tunguska region of Russia.
In a Tunguska gulag, Mulder and many others are infected with the alien virus that uses oil as a medium. The only person who knows Mulder's whereabouts is Scully, who has been called before a Senate Subcommittee hearing on the death of a diplomatic courier, who fell from Skinner's apartment balcony.
When Mulder finds the body of a little girl, which re-opens one of his old cases in the Violent Crimes Unit, he believes that the serial killer whom he captured may have murdered more victims and one of them might be his sister.
Mulder and Scully are on the trail of a mythical beast when a deadly rain caused the death of a girl in a migrant workers camp.
Mulder and Scully investigate the strange disappearance of a man's body from the hospital morgue. When an identical man starts to work at the same hospital, Mulder believes that the man has the ability to regrow parts of his body which include his head.
While Mulder is on vacation, Scully finds her life in danger when she becomes involved with a man bearing a tattoo that talks to him and is telling him to stay away from other women.
X-Rays taken reveal that Scully has a nonoperable tumor located between her nasal cavity and her brain. With Mulder at her side, they head to Allentown, Pennsylvania, to find the women she came into contact with one year ago ("Nisei") who may have the answers Scully needs.
After a Jewish man was murdered in a Jewish community, his killers were found murdered too. Mulder and Scully have to determine whether someone is extracting vengeance or larger forces are at work.
When a high-ranking military official was mysteriously assassinated, Mulder and Scully racing against the clock to stop a seemingly unstoppable assassin.
Mulder and Scully are approached by a woman close to Max Fenig. The NICAP member and alien abductee was taking a plane to upstate New York, but she hasn't heard from him. Learning that the flight that Max was on has crashed, the agents head to New York State to search for the reason that Max was on that plane.
Mulder finds the second crash site at the bottom of a lake, revealing a downed U.F.O. However, the military is close behind and Mulder is arrested. To cover their tracks, the military issues an apology to the public using a false story in order to cover up what really occurred in the skies above New York State.
Mulder and Scully involve themselves in an apparant murder case at the Massachusetts Institute of Technology when the murderer's alibi proves to be out there: He claims that an old man had foretold the victim's death. However, the case becomes interesting when the campus security officer who detained the old man is found dead...and frozen solid.
When several babies in the same town are all born with tails, the local OB-GYN is blamed for tampering with fertilized eggs. Mulder suspects a man who proves to be impossible to identify.
Mulder is investigating a case where the main suspect appears to be his own superior, Assistant Director Skinner.
With dead girls turning up, Mulder and Scully's investigation turns to a man in a home for the mentally challenged. The man, who fears for his life, has been able to see the all the victims' deaths before they happen.
Mulder suffers from memory loss when he undergoes an experimental form of hypnotherapy to recover his memories about his sister's abduction. Then, he becomes the only suspect in a brutal double murder.
Mulder finally discovers the ultimate proof of extraterrestrial life when he is contacted by a scientist who has found a preserved alien body in the mountains of Canada. Meanwhile, Scully is forced to confront her own mortality.
As Mulder takes in the words told to him by Michael Kritschgau, that extraterrestrial life is nothing but a hoax, he is contacted by Kritschgau telling him that someone may be watching Mulder's apartment. Later, Mulder arrives at Scully's apartment, informing her that the man who was watching Mulder for someone at the FBI is now dead. The two work around the clock in order to connect the dots to a mole inside the Bureau.
While Scully is lingering near death and the future of the X-Files in danger, Mulder is brought before Section Chief Blevins to explain the incident that led up to the hearing on his supposed death. When Skinner confronts Mulder, the agent tells his superior the truth about Scully's abduction.
In 1989, a straight-laced federal employee, a sex mad AV expert and a nerdy computer hacker meet Susanne Modeski, who claims to have evidences of a government conspiracy and is being followed by an FBI agent named Fox Mulder.
On their way to a FBI convention in Florida, Mulder and Scully involve themselves in a case where three men have mysteriously vanished in a large forest. Evidence at the crime scene seems to suggest someone human who walks on the balls of their feet.
Mulder and Scully head to a small Midwestern town to investigate reports of a two-faced monster that has been impregnating women.
Scully is haunted by dreams which hint at a strange connection to a murdered woman's daughter who bears an uncanny likeness to her sister, Melissa, at that age.
While Scully fights to protect Emily from the same men responsible for her adoptive parents' deaths, DNA testing on Emily reveals that she is actually Scully's daughter.
Mulder and Scully must race to catch an old adversary who has escaped from prison before he takes revenge against Mulder.
When a teenage boy is suspected of killing his father by burying him alive, Mulder and Scully head to Michigan to examine the death. The father was more than twice the size of his son and evidence is found that the boy could have had help. However, Mulder believes that the boy is innocent.
On a mini-vacation to Maine, Scully encounters bizarre cases where the victims appear to have inflicted wounds upon themselves. Evidence in the first case suggests a connection to a woman who has been suspected by the townsfolk of being a witch.
Mulder and Scully investigate the strange death of a computer genius. Unknown to them, a super-intelligent virus program is let loose on the Internet and begins to grow and expand by itself.
Having to give a report to Assistant Director Skinner on their latest case, Mulder and Scully both give each other their interpretation of the events that led to Mulder killing a man who he suspected was a vampire.
A series of horrific mass killings leads Mulder to startling evidence of extraterrestrial life. Meanwhile, Scully finds herself forming a special bond with Cassandra Spender, who is an abductee too.
At a third abduction site, one that Scully is "summoned" to, aliens once again set the gatherers on fire. Cassandra Spender has disappeared and her son, Jeffrey, blames Mulder for it.
Mulder visits a former FBI agent named Arthur Dales, who may be able to shed some light on why a murder suspect's last word was the young agent's name. Dales tells him a story about the agents assigned to a would-be X-File in the Cold War era of the 1950's.
Mulder and Scully investigate a murder where the main suspect is a blind woman but Mulder suspects that her involvement is not what it seems.
A priest asks Scully to investigate the unexplained death of a disabled young girl, but her investigation leads her to face a mystery that even she is afraid to understand.
Scully begins to suspect Mulder of having another agenda while they are investigating a dangerous group of anti-government terrorists experimenting with biological warfare.
Mulder and Scully are instructed by Skinner to assess the threat at a telemarketing center in Illinois. A similar incident has happened before and this time a manifesto was sent to a Chicago radio station with claims of a paranormal nature at the center. Feeling that the case is a waste of time, Mulder tells Scully to stay behind while he plays the good Bureau kicking boy. However, Mulder soon realizes that the case is actually an X-File.
An attempted assassination of a young boy with psychic powers draws Mulder and Scully into an investigation that strikes at the heart of the X-Files.
In this episode, it shows scenes from behind the production room and discusses about the characters from the show.
An accident at Rousch Technologies brings an E.B.E. to term inside a human host. Killing one person, the creature is now on the loose in Phoenix. Meanwhile, Mulder and Scully try to support their work on the X-Files, but their arguments fall on deaf ears. Skinner, behind the back of the OPR committee reviewing the agents' work, gives Mulder information on the death of the human host.
While working on a domestic terrorism assignment, Mulder comes across an apparant hostage situation turned high-speed chase in Northern Nevada that seemingly defies belief: A woman's head explodes in a police car, yet there is no indication she was shot. Defying orders not to pursue cases resembling X-Files, Mulder and Scully head to Elko, Nevada, to assist the local police.
With the rain falling at sea, Mulder is pulled aboard HMS Queen Anne, long thought to have disappeared in the Bermuda Triangle. However, the crew that pulls him up are from the year that the ship had disappeared: 1939. While Mulder tries to figure out what to do, the Lone Gunmen approach Scully while at work and ask her for help in finding Mulder.
An anonymous tip brings Mulder and Scully to Groom Lake, Nevada; better known as Area 51. When they witness the flight of a mysterious craft, Mulder mysteriously swaps bodies with an Area 51 Man in Black.
Scully finally realizes that real Mulder is still in Nevada and rushes there to help him, while Mulder fights to return his life to normal before it's too late.
On Christmas Eve, Mulder has Scully meet him at a supposedly haunted mansion in Maryland. Scully, however, doesn't have time for ghost stories and begins to leave when she sees Mulder leave his car and approach the house. Upon entering the manse, both discover a pair of star-crossed lovers who died ages ago. On this night, the two ghosts are going to have a bit of fun with their guests.
Mulder and Scully investigate a case where a mother is accused of killing her unborn child. However, they begin to suspect a more sinister force at work.
Mulder and Scully journey to a small town that is plagued by drought. The town's mayor, who has invited them, tells the agents that the blight is caused by a local man who, he claims, does rain dances for money.
Skinner falls seriously ill after being infected with a biologically engineered disease by a shadowy government organization. Now, Mulder and Scully have to track down the leader of the group to save Skinner.
Scully is temporarily assigned a new partner and heads to New York City to investigate a crime scene photographer who may actually be the killer. Back in Washington, Mulder continues to help his partner.
The return of Cassandra Spender, an alien abductee, threatens to finally expose the conspiracy involving extraterrestrials. The Cigarette-Smoking Man has to strike back at Mulder and Scully before they uncover the truth.
Mulder has finally found out the truth about the government conspiracy responsible for his sister's abduction, but now he doesn't know what to do with this new found knowledge.
Receiving a call from Arthur Dales, Mulder and Scully head to Florida and into a torrential downpour that is followed by a hurricane. Dales tells the two agents that he received a call from the wife of a couple he knows whose husband had been grabbed by something with tentacles.
As Mulder lies bleeding from a gunshot wound in Scully's arms, a bank robber flicks a switch that detonates a bomb, destroying a bank in Washington, D.C. Moments later, time returns to the beginning of that fateful day and the events are repeated once again.
Mulder and Scully are investigating a series of bizarre happenings in an exclusive gated community. However, they have to pose as a married couple in order to continue their investigation.
Mulder and Scully are called in to investigate a case where a mysterious dog, which is the last of an ancient Asian species, is responsible for several murders.
A convict in Mississippi is reprimanded by a dictatorial warden, who puts the convict in a solitary confinement box located outside during a huge storm in which several tornadoes touch down. When the storm subsides, the box has been destroyed, but its former occupant has escaped and wreaks havoc on those that wronged him. Mulder and Scully try to figure out his next move and how the convict is able to move through seemingly impassable barriers.
When Mulder and Scully investigate several murders where the killer leaves no clues, Scully finds herself strangely attracted to the prime suspect of the case.
Mulder and Scully find an old case involving a star player in the Negro Baseball League who has an unbelievable batting average and an incredible secret.
Attempting to gain access to intelligence conferences on new military applications, weaponry, and tactics at DefCon 99 in Las Vegas, the Lone Gunmen run into Susanne Modeski, who had been taken before their very eyes over ten years ago.
When two skeletons of a couple who have only been missing for less than a week are discovered, Mulder and Scully are called in to investigate. Soon, their investigation leads them on a journey in which nothing is quite as it seems.
An artifact found off the coast of western Africa is brought by a site researcher to be analyzed by an associate at American University. However, an interloper meets with the researcher first and kills the man, taking the artifact. The murder comes to the attention of Skinner, who hands the case over to Scully and Mulder.
While Mulder is still plagued by his neurological pain, Scully is in Africa, trying to piece together the meaning of the symbols on the spaceship. At Mulder's request, Skinner finds Kritschgau and together they try to save Mulder.
Mulder's dreams lead him astray from his mission and the X-Files, while Scully continued to search for a way to help him.
When a man dies by having his brain sucked through a small hole in his skull, Mulder and Scully venture to Orange County where a monster tries to disguise himself and live a normal, civilized life.
Mulder and Scully enlist the help of criminal profiler Frank Black in order to prevent the Millennium Group from bringing about the end of the world on New Year's Eve.
A high schooler is brought into a secret involving a cave that gives one who enters it the power to move at lightning speed. Mulder and Scully try to stop the three teenagers involved before more lives are lost.
Mulder and Scully head to Chicago to interview a man who survived a fall from the top of a building. Apparantly mobsters were involved, but the victim does not want to implicate anyone. Unfortunately, the mobsters learn that he survived and send people to kill him.
With the help of a preacher who can alter events as they play out in real time, Donald Eddie Pfaster escapes from prison. The preacher has a higher purpose in mind for the death fetishist, but Pfaster can only think of the one who escaped from him: Dana Scully.
When a small-time magician is found dead in his van with his head neatly sawn off after turning his head 360 degrees for an amazed audience, Mulder and Scully are called in to investigate.
Mulder and Scully doubt that it was a case of divine intervention, when several deaths seem to be linked to snakes which are killing the unrighteous.
Mulder requested to investigate a case where a little girl mysteriously disappeared from her home. Scully is concerned that Mulder might become too involved because of his sister's abduction.
A man claims to have had visions on the whereabouts of murdered victims and takes Mulder on a journey which reveals the truth about his sister's abduction.
Mulder and Scully are being filmed and followed by the Cops camera crews as they are trying to investigate a monster on the streets of Los Angeles.
Scully must battled a deadly digital character in order to save Mulder's life, when they were investigating a murder inside the high-tech world of a virtual reality game.
Mulder and Scully are investigating a case revolving threats toward a doctor's family.
The Cigarette Smoking Man offers to show Scully the cure for cancer if she travels with him but she must not let Mulder knows about this trip.
Mulder is investigating a missing person case and he learns to enjoy the company of a menacing raven when it became the key feature in the case.
Scully meets up with someone from her past, causing her to question her own romantic and professional choices.
An employee of Morley Tobacco Co. is apparently killed by tobacco beetles and Mulder begins to suspect the case is linked to the experimental cigarettes.
Mulder and Scully have to watch a movie which was made based on them and a case that they investigate revolving around the The Lazarus Bowl, a mythical piece of pottery reputed to have inscribed on it the words that Jesus Christ spoke when he raised Lazarus from the dead.
Mulder and Scully are investigating a case where 2 women who look identical have been causing chaos and mayhem wherever they are.
Mulder and Scully discover a genie in a rug who can grants any wishes, but she begins to corrupt those wishes she grants, thus making the granters in a whole lots of trouble.
Mulder and Scully are in the town where a UFO has crashed in the forest. Meanwhile, Cigarettes Smoking Man has arranged for Krycek to be released from prison.
The newly appointed Deputy Director Kersh has organizes a manhunt for Mulder and assigns Agent John Doggett to lead the team. He even warned Scully and Skinner that they will be fired if anything is said about aliens. Scully and the Lone Gunmen suspect that the Bounty Hunter might go after Gibson Praise.
Gibson Praise makes Scully believes that she is close to her target. Meanwhile, Agent Doggett has been told to be Mulder's successor in the X-Files by AD Kersh.
Doggett is investigating his first case in the X-File. The case revolved around a series of gruesome murders linking to a bat-like creature.
Without Doggett, Scully alone is investigating a brutal murder in Utah. However, she became trapped in a small town occupied by a religious cult.
Ten years after a little boy mysteriously disappeared from his school playground, he reappeared again and
he hasn't aged a day since.
A lawyer wakes up and finds himself in jail for the murder of his wife, but he has no recollections of that event. What's more puzzling is that the days begin to regress backward towards the murder.
Doggett and Skinner are investigating the mysterious murder spree of a religious cult leader. They suspect him to be able to enter the dreams of the people he knows and can kill them in their sleep.
Scully and Doggett are investigating a case where a real estate agent was shot from the roof, inside a prison cell. One of the murderers might have x-ray's vision.
A man takes revenge on those who has caused his blood to change rapidly into metal alloy.
When his son died in a chemical plant accident, an Indian mystic smuggles into the USA to take revenge on two families in Washington D.C.
Doggett found an old case which was investigated by Mulder and was kept a secret from Scully. He decides to follow up the investigation, in order to find any leads into Mulder's disappearance.
Scully and Doggett are investigating a plague of bacteria in the subway tunnels of Boston which eats away human flesh.
When a man claimed that his wife was murdered after giving birth to an alien baby, Scully and Doggett were called in to investigate. Scully began to question her own pregnancy and its conception.
Doggett, Scully and Skinner thought they may have found a lead into Mulder's whereabouts when Teresa Hoese, an abductee was found returned in a desert. However, Scully feared that they are going to find Mulder just like Teresa, near death or already dead.
After Mulder was buried, Billy Miles who also was dead, somehow comes back to life. Skinner and Scully immediately dig up Mulder and found him to be alive too. Krycek offers Skinner a vaccine for Mulder's virus infection but he wants him to kill Scully's unborn child.
Mulder has requested to be reassign back to the X-Files, but he is denied by Kersh. Mulder starts investigating the death of a census worker who was killed on the White House lawn.
Reyes seeks Mulder's help in investigating a killer's connection to the murder of Doggett's son.
Mulder and Doggett investigate several deaths on an oil rig. Mulder is convinced that the oil in the rig is really the alien black oil.
A young agent has been assigned to the X-files when Scully has to take maternity leave. Together with Doggett, they investigate a case revolving a deadly reptilian creature. When they went missing, Scully and Mulder heads out to search for them.
Mulder and Doggett are investigating the death of a doctor who was suspected of experimenting with alien impregnation in an arson attack on a genetics lab. They discovered that Billy Miles who has been changed into an alien replicate, is trying to erase all evidence of the tests. Now, together with Reyes and Krycek, they must protect Scully and her baby.
Mulder, Doggett and Skinner are fighting off the alien replicates while Reyes takes Scully to a remote farm to safeguard the birth of her baby.
Doggett and Reyes investigate the death of an EPA official. Scully who has returned to her teaching position at the FBI Academy in Quantico was asked to help out. Doggett and Reyes might have found the woman who possesses knowledge of a possible government cover-up involving Scully's baby.
Doggett has found Shannon McMahon who killed the EPA official. She claims to be a super solider. Meanwhile, Scully's baby is showing signs of being extraordinary.
Doggett and Reyes investigate a double homicide that has all the signs of a satanic ritual killing. While Doggett is convinced that a doctor is orchestrating the crimes from within the hospital, Reyes believes it points to the existence of an evil entity.
Doggett is clinging to life in the hospital following a shooting and Reyes has been accused of attempted murder after a witness identifies her as the shooter.
Doggett and Reyes asked Scully to help them to investigate the bizarre death of a teenager who died while performing a stunt for a cable TV show.
Scully has to decide whether she should put Mulder's life in danger by looking for him after a couple claims that their baby has the same abilities as William and they will only talk to Mulder about the information they have revolving around the super soldier program.
An amnesic Doggett is wandering in a small Mexican town. Meanwhile, Scully and Reyes went searching for him.
Doggett and Reyes investigate a series of murders where the victims were skinned alive. Scully was called in to help out and they found the murders to be linked to a case from 1960.
Scully decides to take drastic measures to protect William when she suspects that he may have more special abilities than she knew.
Scully desperately wants to rescue William from his kidnappers, so she enlists the help from the Lone Gunmen.
Reyes is in a coma after a car accident. Scully and Doggett desperately search for a way to help her while Reyes found herself in a strange place.
Scully, Doggett and Reyes have to reopen one of Doggett's old cases to determine whether the man dubbed as The Screwdriver Killer and has recently been released from prison was really guilty or not.
Using numerology, Reyes managed to deduce that a single killer is behind a series of murders. Reyes and Scully also discover some clues left by a mysterious stranger.
Agent Leyla Harrison asks Doggett and Reyes to investigate the death of a woman who was presumed to have stabbed herself repeatedly. Harrson suspects a man who can control terrifying creatures is behind the murder.
Scully, Doggett and Reyes ask for the help of the Lone Gunmen when Morris Fletcher gives them information about the Super Soldiers.
A severely deformed man is captured in the X-Files office while trying to steal documents about Mulder's sister. Doggett and Scully becomes suspicious of his real identity when his DNA is found to match that of Mulder.
An FBI profiler links a series of murders to the killing of Doggett's son. However, soon Doggett and Reyes start to wonder about his involvement in the murders.
The agents are investigating a mysterious death outside the house which the original Brady Bunch series was filmed. There, they meet a man who is obsessed with The Brady Bunch.
Mulder is on trial before a military tribunal that seeks to justify and prove the existence of an alien conspiracy and The X-Files.
Although several witnesses testified to help Mulder, he was found guilty by the military panel and sentenced to death by lethal injection.