The X-Files (1993–2016) 
Two FBI agents, Fox Mulder the believer and Dana Scully the skeptic, investigate the strange and unexplained while hidden forces work to impede their efforts.
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The X-Files: The Sixth Extinction II: Amor Fati (Part 3/3) Rewatch Season 7, Episode 2
Mulder is taken from the hospital by the Cigarette Smoking Man, who offers him a new life free from the pressures of his quest for the truth, while Scully continues to search for an explanation for Mulder's neurological condition.
The X-Files: The Sixth Extinction (Part 2/3) Rewatch Season 7, Episode 1
While Scully tries to piece together the meaning of the symbols engraved on the spaceship beached in West Africa, Skinner and Kritschgau endeavour to assuage Mulder's frenetic brain activity.
The X-Files: Biogenesis (Part 1/3) Rewatch Season 6, Episode 22
The discovery of fragments of an artifact in West Africa leads to several murders. As Mulder and Scully investigate, Scully's findings imply that aliens have engineered human evolution and history, and the artifacts have an unexpected effect on Mulder's mind.
The X-Files: Three of a Kind Rewatch Season 6, Episode 20
In a sequel to "Unusual Suspects", the Lone Gunmen once again encounter Susanne Modeski while infiltrating a defense contractors' conference in Las Vegas.
The X-Files: The Unnatural Rewatch Season 6, Episode 19
Arthur Dales, the brother of a retired FBI agent with the same name, tells Mulder about an alien who played baseball for the Roswell Grays in 1947.
The X-Files: Milagro Rewatch Season 6, Episode 18
A writer who lives next door to Mulder, and who demonstrates an unsettling level of interest in Scully, becomes the prime suspect in a series of killings in which the heart is removed from the victims' bodies without surgical incision.
The X-Files: Trevor Rewatch Season 6, Episode 17
Agents Mulder and Scully pursue a ruthless escaped convict in Mississippi who is capable of passing through solid matter at will, and who seems to be in search of something he believes to be his.
The X-Files: Alpha Rewatch Season 6, Episode 16
After a Wanshang Dhole, a species of dog long believed to have been extinct, kills two merchant seamen and escapes from its freight crate en route from China to the U.S., Mulder and Scully try to track it down with the help of an introverted canine expert, and the enigmatic cryptozoologist who claims he initially found and captured the dog.
The X-Files: Arcadia Rewatch Season 6, Episode 15
Mulder and Scully go undercover as a married couple in a planned community in San Diego County, California, where people who don't follow the extensive and exacting homeowner regulations mysteriously disappear.
The X-Files: Agua Mala Rewatch Season 6, Episode 13
Arthur Dales asks Mulder to come to Florida during a rising hurricane after a neighbouring family disappears.
The X-Files: One Son (Part 2/2) Rewatch Season 6, Episode 12
Mulder learns the truth about the Syndicate's extraterrestrial collaborations, just as the time has arrived for the Syndicate to give up the hybrid Cassandra to the alien colonists.
The X-Files: Two Fathers (Part 1/2) Rewatch Season 6, Episode 11
Cassandra Spender is found at a railyard in Arlington, Virginia, the only survivor among a number of people who have been burned alive, and she asks to speak to Agent Fox Mulder.
The X-Files: Tithonus Rewatch Season 6, Episode 10
When a young agent notices that a certain New York City crime scene photographer has an suspiciously uncanny knack of being first on the scene whenever someone dies, A.D. Kersh assigns Scully to the case.
The X-Files: S.R. 819 Rewatch Season 6, Episode 9
Skinner becomes infected with a disease that confounds his doctors, keeps catching glimpses of a unkempt man lurking near him, and receives phone calls telling him that he will die.
The X-Files: The Rain King Rewatch Season 6, Episode 8
Mulder and Scully go to Kroner, Kansas, to investigate Daryl Mootz, the self-proclaimed "Rain King", who appears to be able to control the weather for his own gain.
The X-Files: Terms of Endearment Rewatch Season 6, Episode 7
After a pregnant woman in Hollins, Virginia has a nightmare in which a demon takes her baby from her, she wakes to find she is no longer pregnant, and is accused of infanticide. Her sheriff brother turns to Jeffrey Spender, who discards the case, but Mulder rescues it from the garbage and goes to Virginia to investigate.
The X-Files: How the Ghosts Stole Christmas Rewatch Season 6, Episode 6
On Christmas Eve, Mulder asks Scully to meet him outside an uninhabited house believed to be haunted by the spirits of two lovers, Lyda and Maurice, who died in a suicide pact in 1917.
The X-Files: Dreamland II (Part 2/2) Rewatch Season 6, Episode 5
Scully and Mulder try to figure out how to reverse the time warp that catapulted Mulder's mind into a body and a life not his own.
The X-Files: Dreamland (Part 1/2) Rewatch Season 6, Episode 4
Driving to Area 51 in the middle of the night to meet with an informant, Scully and Mulder are stopped on the highway by a caravan of soldiers and a man in a black suit. In the middle of this encounter, a mysterious craft passes overhead and then crashes, sending a wave of energy across all the bystanders, and changing some of them radically.
The X-Files: The Beginning Rewatch Season 6, Episode 1
Following the events in Fight the Future, the X-files are reopened, but Diana Fowley and Jeffrey Spender are the agents assigned to it. Undeterred by their orders to cease all involvement in the X-files, Mulder and Scully unofficially investigate a case in Arizona involving the death of two Roush Technologies employees from an uncommonly virulent virus.
The X-Files: The End Rewatch Season 5, Episode 20
After an ex-National Security Agency assassin kills one of the two players at a chess match between a Russian chess master and an American child prodigy named Gibson Praise, Jeffrey Spender is given the case, and though he explicitly asked that Mulder be excluded from his investigation, Skinner asks Mulder to join the team.
The X-Files: Folie à Deux Rewatch Season 5, Episode 19
Mulder goes to Oak Brook, Illinois to perform a threat assessment after a vinyl siding company employee sends an anonymous, audio-taped manifesto to a local radio station, on which he speaks of a monster at the company who "hides in the light", and who must be killed.
The X-Files: The Pine Bluff Variant Rewatch Season 5, Episode 18
Mulder goes undercover as a double agent in order to infiltrate a terrorist organization that has access to a horrifying biological weapon.
The X-Files: All Souls Rewatch Season 5, Episode 17
After a severely disabled sixteen-year-old girl, who had been adopted by a couple from Scully's church, is found dead in the street in the middle of the night, kneeling and genuflecting and with her eyes burned out, Father McCue asks Scully to look into the case.
The X-Files: Mind's Eye Rewatch Season 5, Episode 16
After a blind woman named Marty Glenn is found in the apartment of a murdered drug dealer in Delaware, the Wilmington police appeal to Mulder and Scully, whom they hope can explain how Marty could have murdered anyone with a single surgical cut to the right kidney.
The X-Files: Travelers Rewatch Season 5, Episode 15
In 1990, a dying man's final word — "Mulder" — leads Mulder to Arthur Dales, a retired FBI agent, who tells him about a case he worked with Mulder's father in 1952, during the height of McCarthyism.
The X-Files: The Red and the Black (Part 2/2) Rewatch Season 5, Episode 14
Many of the abductees who gathered on the Ruskin Dam bridge are found dead, Cassandra Spender is missing, and Scully is found in a state of shock in the nearby woods with some other survivors. Scully undergoes hypnosis to recover her memories of what happened on the bridge, while the Syndicate experiments with a possible vaccine and chooses sides between the alien and the alien rebel forces, and Jeffrey Spender receives a letter from Quebec.
The X-Files: Patient X (Part 1/2) Rewatch Season 5, Episode 13
Groups of former alien abductees feel strangely compelled to gather and are burned alive by faceless men when they do, and Mulder and Scully meet Cassandra Spender, multiple abductee, who says she is certain she is about to be summoned.
The X-Files: Kill Switch Rewatch Season 5, Episode 11
When the body of a renowned computer programmer who had disappeared in 1979 is found among a number of dead street level coke dealers after a shoot out in a seedy diner, Mulder and Scully take his laptop to the Lone Gunmen to find out what he had been working on.
The X-Files: Chinga Rewatch Season 5, Episode 10
While on vacation in Maine, Scully enters a grocery store where all the customers and staff had suddenly began clawing at their own faces when a young widow briefly visited the store with her young daughter and her daughter's doll.
The X-Files: Schizogeny Rewatch Season 5, Episode 9
Mulder and Scully investigate a case in Coats Grove, Michigan, involving the death of a man who was found sucked down into a pit of mud and tree roots after an argument with his stepson, and a 16-year-old boy who is suspected of a murder that it seems physically impossible for him to have committed.
The X-Files: Kitsunegari Rewatch Season 5, Episode 8
In a sequel to "Pusher", Robert Patrick Modell recuperates enough from his injuries to break out of the prison hospital, and Mulder tries to figure out what Modell's new game is.
The X-Files: Emily (Part 2/2) Rewatch Season 5, Episode 7
Scully tries to move forward with the adoption of Emily Sim, while Mulder investigates Emily's medical history.
The X-Files: Christmas Carol (Part 1/2) Rewatch Season 5, Episode 6
While visiting her brother and sister-in-law's home in San Diego for Christmas, Scully receives a mysterious phone call that leads her to a three-year-old girl with a remarkable resemblance to her dead sister Melissa.
The X-Files: Detour Rewatch Season 5, Episode 4
While on their way to a team-building seminar, Mulder and Scully are sidetracked by an investigation into the unexplained disappearance of several people in the woods of Northern Florida.
The X-Files: Unusual Suspects Rewatch Season 5, Episode 3
At a 1989 computer and electronics show at the Baltimore Convention Center, two startup business owners and a federal employee join forces when they meet Susanne Modeski, a woman who claims that she is being pursued by her psychotic ex-boyfriend, Fox Mulder.
The X-Files: Redux II (Part 3/3) Rewatch Season 5, Episode 2
Scully is hospitalized as her condition worsens. Mulder attempts to identify the conspiracy's mole within the FBI. The Cigarette Smoking Man offers to solve all of Mulder's problems if he will leave the FBI and work for him in return.
The X-Files: Redux (Part 2/3) Rewatch Season 5, Episode 1
Scully helps Mulder to fake his own death in an effort to discover which members of the FBI they can trust, while the agents individually search for an answer to Scully's cancer.
The X-Files: Gethsemane (Part 1/3) Rewatch Season 4, Episode 24
An expedition in Northwestern Canada finds an alien body frozen in the ice, but while Mulder travels to the Yukon to see it for himself, Scully meets a man who claims that all the evidence of alien life Mulder has ever encountered has been faked as part of a conspiracy.
The X-Files: Demons Rewatch Season 4, Episode 23
Mulder wakes up in a Providence motel room alone, in a shirt stained with blood that is not his, and with two rounds gone from his gun, at 4:50 a.m. on a Sunday morning, and he cannot remember anything from the last 48 hours.
The X-Files: Elegy Rewatch Season 4, Episode 22
Mulder and Scully investigate after a Washington, D.C. bowling alley owner sees a badly injured, bleeding blond girl wedged inside one of his pinspotter carriages, and rushes out to the street to call for help, only to discover that the police are already on the scene because the girl's dead body is lying outside, beside a car.
The X-Files: Zero Sum Rewatch Season 4, Episode 21
After a postal worker is fatally swarmed by bees in the bathroom at work, Skinner destroys the evidence at the Cigarette Smoking Man's behest in a deal to save Scully's life... only to find himself framed for murder.
The X-Files: Synchrony Rewatch Season 4, Episode 19
Mulder and Scully investigate the case of a man who is arrested after apparently pushing his colleague in front of a bus, but who claims he was actually trying to save him from that fate, which was predicted down to the exact time by a strange old man they met earlier.
The X-Files: Max (Part 2/2) Rewatch Season 4, Episode 18
Mulder and Scully continue their investigation of Flight 549 and discover that it may have been sacrificed by the military in order to obtain alien technology.
The X-Files: Tempus Fugit (Part 1/2) Rewatch Season 4, Episode 17
Scully's birthday celebration is interrupted by Max Fenig's sister, who approaches Mulder and Scully to tell them that Max was on a plane that crashed. No one seems to understand why the plane crashed, or why the passengers' watches have stopped at a time ten minutes past the time of the crash.
The X-Files: Unrequited Rewatch Season 4, Episode 16
Mulder and Scully are called upon to help protect high ranking military officers who served in Vietnam after a lieutenant general is shot in his limousine by a gunman who disappears unseen, leaving only a king of hearts playing card of the kind soldiers in Vietnam used to mark their kills.
The X-Files: Kaddish Rewatch Season 4, Episode 15
A Hasidic Jewish man is beaten and murdered in Brooklyn, New York, by three teenaged boys, almost on the eve of his wedding, and Scully and Mulder are asked to investigate after one of the boys is found strangled, with the dead victim's fingerprints on his body.
The X-Files: Momento Mori Rewatch Season 4, Episode 14
Scully is diagnosed with an inoperable tumour, and begins treatment for it, while Mulder and Skinner both go to desperate lengths in their separate attempts to save her.
The X-Files: Leonard Betts Rewatch Season 4, Episode 12
After a phenomenally gifted EMT is decapitated in a car crash, Mulder and Scully are called to Pittsburgh to investigate the mysterious disappearance of his headless body from the hospital morgue.
The X-Files: El Mundo Gira Rewatch Season 4, Episode 11
After a sudden flash of light, three booms, and a torrential yellow rain take place near a migrant camp, a young woman named Maria is found dead with her face eaten away. Mulder and Scully try to find an explanation for Maria's death as well as the man who was with her.
The X-Files: Paper Hearts Rewatch Season 4, Episode 10
After a recurring dream of Mulder's leads him to the secret grave of a little girl murdered by a serial killer whom he caught and who had confessed to 13 murders, and then to the hiding place of the murderer's trophy collection of 16 cloth hearts, Mulder and Scully try to find and identify the remaining two girls.
The X-Files: Terma (Part 2/2) Rewatch Season 4, Episode 9
Mulder is held captive in a Russian gulag and used as a test subject for the black oil, while Scully is held in contempt of court for refusing to disclose what she knows about Mulder's whereabouts.
The X-Files: Tunguska (Part 1/2) Rewatch Season 4, Episode 8
While investigating the deaths of two men in connection with the recent arrival of a diplomatic pouch, Mulder and Krycek travel to Tunguska, Russia to investigate Russian experiments with the black oil, while Scully tries to ascertain the nature of the contents of the pouch.
The X-Files: Musings of a Cigarette-Smoking Man Rewatch Season 4, Episode 7
The Cigarette Smoking Man muses over the course of his life while listening to Mulder, Scully, and the Lone Gunmen speculate about his personal history.
The X-Files: The Field Where I Died Rewatch Season 4, Episode 5
An FBI investigation of a doomsday cult has Scully and Mulder interviewing a 25-year-old cult member who says that in one of her past lives she was a nurse during the Civil War... and that Mulder was a Confederate soldier who died in her arms in the field adjoining the cult compound.
The X-Files: Unruhe Rewatch Season 4, Episode 4
Mulder and Scully investigate a Traverse City, Michigan abduction and murder in which the only clue is a passport photo that inexplicably developed as a psychic photo of the terrified victim surrounded by spectral images.
The X-Files: Teliko Rewatch Season 4, Episode 3
Mulder and Scully are asked to investigate a series of unexplained deaths of African-American men whose bodies are found drained of all pigmentation.
The X-Files: Herrenvolk (Part 2/2) Rewatch Season 4, Episode 1
Pursued by the alien bounty hunter, Jeremiah Smith takes Mulder to see a secret ginseng and bee farm in Canada that is being worked by child clones, while Scully analyzes the data being tracked by the team of Jeremiah Smiths.
The X-Files: Talitha Cumi (Part 1/2) Rewatch Season 3, Episode 24
Mulder and Scully search for a man who miraculously healed both the shooter and his victims at a fast food restaurant hostage situation, then disappeared when being questioned by the police.
The X-Files: Wetwired Rewatch Season 3, Episode 23
Mulder and Scully go to Braddock Heights, Maryland, to investigate the case of a man who had murdered five people, one of them his own wife, believing them all to be a brutal dictator whose career he'd been following closely on the news.