FBI special agents investigate unexplained cases known as `X-Files'. Though the government is convinced that the outlandish reports are false, conspiracy theorist Fox Mulder and realist Dana Scully, for most of the series, stop at nothing to prove that "the truth is out there."
As the alien bounty hunter continues his relentless pursuit, Mulder encounters puzzling new evidence regarding his sister.
Mulder and Scully encounter a family of inbred, animal-like brothers living on a remote Pennsylvania farm.
Mulder believes a creature from an African folk tale may be responsible for the disappearance of several black men in the Philadelphia area.
The agents investigate the bizarre abduction of a young woman; their only clue a terrifying and inexplicable photograph left at the crime scene.
Agents Mulder and Scully investigate a doomsday religious cult, which inadvertently draws Mulder into recalling a past life.
Mulder and Scully investigate when patients undergoing cosmetic surgery die horrible deaths at the hands of doctors possessed by witchcraft.
One of the Lone Gunmen becomes a marked man when he finds information linking the Smoking Man to several assassinations.
A tip from Krycek leads Mulder and Scully to a meteorite fragment containing an alien life form.
Mulder escapes from a Russian gulag and uncovers more clues pertaining to a mysterious meteorite fragment.
A dream leads Mulder to the shallow grave of a young girl. Her jailed killer claims that he may have also murdered Mulder's sister.
A community of migrant workers attributes several strange deaths to El Chupacabra - a creature straight out of Mexican folklore.
A headless corpse walks out of a hospital morgue, triggering the search for a highly evolved humanoid life form.
Scully finds herself attracted to a divorced man, whose tattoo seemingly has a mind of its own.
Scully is diagnosed as having an inoperable brain tumour. Mulder believes that her condition is connected to her abduction two years earlier.
Mulder suspects that a monster described in Jewish folklore may be responsible for the deaths of several people who murdered a Jewish man.
Mulder and Scully race to catch a seemingly invisible assassin, but suspect that their investigation is being blocked from within.
When a commercial airliner crashes with a known alien abductee on board, Mulder believes it is the result of a mid-air collision with a UFO.
Mulder and Scully investigate what really caused the airliner to crash, as the military begins to cover up the truth.
After a scientist is frozen to death, Scully finds that the compound used to kill him has not been invented yet. Did it come from the future?
While looking into the mystery of several babies born with tails, Mulder and Scully search for a man who has the ability to change his face.
Skinner is framed for murder after he covers up the death of a young woman who was attacked by a swarm of bees.
Mulder and Scully track a series of murders that lead to a psychiatric unit and a cryptic message left by the killer's victims.
Mulder wakes from a nightmare in a strange hotel room, covered in blood and with no recollection of how he got there.
When a frozen alien corpse is discovered in Canada, Mulder is convinced that it will finally provide the hard evidence he has been looking for.