Top 10 X-Files episodes

1 The Host

Season 2 Episode 2

Originally aired September 23, 1994

Mulder hunts down a worm-like humanoid creature that is going on a murder spree in the New Jersey sewage systems.

2 Darkness Falls

Season 1 Episode 20
Originally aired April 15, 1994

While investigating the disappearance of a team of loggers in the Washington forest, Mulder and Scully find themselves under attack by a swarm of ancient insects that only come out at night. 

3 Agua Mala

Season 6 Episode 13

Originally aired February 21, 1999

As a hurricane approaches Florida, Mulder and Scully become trapped in an apartment building where there is something lurking in the water. 

4 Drive

Season 6 Episode 2

Originally aired November 15, 1998

While on a routine assignment, Mulder is taken hostage in his car by a seemingly deranged man with a gun who claims that he will die if he slows down. Written by Vince Gilligan and guest starring Bryan Cranston.

5 Home

Season 4 Episode 2

Originally aired October 11, 1996

The discovery of the deformed body of an infant in a small town leads Mulder and Scully on a trail to a family of inbred mutants.

 6 Detour

Season 5 Episode 4

Originally aired November 23, 1997

On their way to a conference, Mulder and Scully stop at a roadblock and join a nearby investigation of attacks by an unidentified predator in the woods.

7 Død Calm

Season 2 Episode 19

Originally aired March 10, 1995

Mulder and Scully travel to Norway to investigate a U.S. Navy ship where the sailors all appear to be the victims of unnaturally rapid aging.

8 Quagmire

Season 3 Episode 22

Originally aired May 3, 1996

Mulder and Scully are called in to investigate a series of mysterious deaths near a lake in a small town, where the locals believe in a killer sea serpent called Big Blue.

9 Arcadia 

Season 6 Episode 15

Originally aired March 7, 1999

Mulder and Scully go undercover as a married couple in order to investigate the disappearance of several residents in an idyllic planned community.

10 X-Cops

Season 7 Episode 12

Originally aired February 20, 2000

Mulder and Scully are captured by the Fox reality television program Cops during an X-files investigation.