A series of sexually-oriented murders, which are identical except that the killer appears to be both male and female, draws Scully and Mulder to an Amish-type community of people called the Kindred.

When death row inmate Luther Lee Boggs claims to be psychic and can lead Mulder to a serial killer in return for a lesser sentence of life in prison, Scully becomes an unwilling believer when Boggs tells her that she can communicate through him with her recently deceased father.

An old Oxford girlfriend of Mulder’s asks for his help on an international case concerning the unexplainable execution of several British dignitaries, and they encounter an assassin who can produce fire from his bare hands.

When two fathers on opposite sides of the country are inexplicably murdered at the exact same time in the exact same way, Mulder and Scully are called in to investigate. When they discover that the two fathers’ eight-year-old daughters are identical twins, they realize that something even stranger is going on.

Mulder puts the future of the X-Files in jeopardy when he heads to a UFO crash site being rapidly covered up by the military. He is arrested, and while in jail he meets Max Fenig, a UFO nut whose NICAP group has followed Mulder’s work on the X-Files. When Mulder is released, Scully urges him to return to Washington to face his superiors and try to save his job, but Mulder finds out that Max is more than meets the eye and ignores Scully to try and save him instead.

Mulder and Scully are contacted by a communications specialist from NASA who shows them evidence of sabotage in the space programme.

In the claustrophobic isolation of a remote outpost in Alaska, Mulder and Scully investigate the horrifying deaths of scientists.

It’s Halloween, and Mulder and Scully are investigating the strange death of a corporate executive in a sophisticated high-tech building.

Mulder and Scully investigate the deaths of two men believed to have been killed by a powerful psychokinetic force.

Mulder and Scully track a legendary creature that has roamed the New Jersey countryside for over forty years..