Episode: Unruhe
#4X02
Writer: Vince Gilligan
Director: Rob Bowman
Mulder’s only hope of stopping a psychotic killer are psychic photographs that reveal the madman’s darkest fantasies.

Episode: Home
#4X03
Writer: Glen Morgan and James Wong
Director: Kin Manners
An investigation into infanticide in an idyllic small town leads Mulder and Scully to an even more appalling discovery. A family deformed by inbreeding into a feral murderous clan.

Episode: Teliko
#4X04
Writer: Howard Gordon
Director: James Charleston
Mulder and Scully combine folk-law and science to solve the mysterious disappearances of African American men.

Episode: The Field Where I Died
#4X05
Writer: Glen Morgan and James Wong
Director: Rob Bowman
An investigation into a religious cult takes Mulder on his strangest journey ever through his past lives.

Episode: Sanguinarium
#4X06
Writer: Vivian Mayhew and Valerie Mayhew
Director: Kim Manners
A series of mysterious deaths which plague a cosmetic surgery clinic lead Mulder to believe it may not be human error but human sacrifice.

Episode: Musings of a Cigarette Smoking Man
#4X07
Writer: Glen Morgan
Director: James Wong
Frohike pieces together what could be the secrets behind the mysterious cigarette smoking man’s past. His speculation could cost him his life.

Episode: Paper Hearts
#4X08
Director: Vince Gilligan
Writer: Rob Bowman
Mulder experiences a series of vivid dreams that lead him to the discovery of the long buried skeleton of a murdered child.

Episode: Tunguska
#4X09
Director: Kim Manners
Writers: Frank Spotnitz and Chris Carter
While performing a random search of a suitcase being carried by a man claiming to have diplomatic immunity, an airport agent is attacked by a black oil that congeals into a tiny worms which penetrate his skin.

Episode: Terma
#4X10
Director: Rob Bowman
Writers: Frank Spotnitz and Chris Carter
In Tinguska, Mulder has survived his ordeal for now, but is still being held captive in a Siberian Gulag.

Episode: El Mundo Gira
#4X11
Director: Tucker Gates
Writer: John Shiban
Deadly rain in a migrant workers camp send Agent Mulder and Scully on the trail of a mythical beast.

Episode: Kaddish
#4X12
Director: Kim Mannners
Writer: Howard Gordon
A murder in a Jewish community leads to the deaths of the killers, forcing Mulder and Scully to determine whether vengeance or larger forces are at work.

Episode: Never Again
#4X13
Director: Rob Bowman
Writer: Glen Morgan and James Wong
Reluctantly pursuing one of Mulders leads alone, Agent Scully finds her life in danger when she becomes involved with a man bearing a deadly tattoo.

Episode: Leonard Betts
#4X14
Writer: Frank Spotnitz, John Shiban and Vince Gilligan
Director: Kim Manners
The disappearance of a man’s body from a hospital morgue leads Mulder and Scully to investigate the strange circumstances surrounding the man’s death.

Episode: Memento Mori
#4X15
Director: Rob Bowman
Writer: Chris Carter, Frank Spotnitz, John Shiban and Vince Gilligan
When Scully is diagnosed with cancer, Mulder searches for research files naming some other female abductess who have also caught the disease.

Episode: Unrequited
#4X16
Director: Michael Lange
Writer: Howard Gordon and Chris Carter
An invisible Vietnam Veterain starts to kill the military's top men.

Episode: Tempus Fugit
#4X17
Director: Rob Bowman
Writer: Chris Carter and Frank Spotnitz
Mulder and Scully investigate a commercial jetliner crash apparantly caused by a UFO.

Episode: Max
#4X18
Director: Kim Manners
Writer: Chris Carter and Frank Spotnitz
The investigation into the crash of the plane continues, as Mulder is under military asrrest as he finds a UFO crash site.

Episode: Synchrony
#4X19
Director: Jim Charleston
Writers: Howard Gordon and David Greenwalt
Mulder and Scully seek answers as an old man uses future technology to commit murder.

Episode: Small Potatoes
#4X20
Director: Clifford Bole
Writer: Vince Gilligan
Mulder and Scully hunt for a man who has special powers that allows hime to change form.

Episode: Zero Sum
#4X21
Director: Kim Manners
Writer: Howard Gordon and Frank Spotnitz
Assistant Director Skinner is framed for a murder after a swarm of bees attacked a women killing her.

Episode: Elegy
#4X22
Director: Jim Charleston
Writer: John Shiban
Mulder and Scully suspect a mental patient is connected to the deaths of girls whose spirits are making contact with the living.

Episode: Demons
#4X23
Director: Kim Manners
Writer: R.W. Goodwin
Mulder is the prime suspect in a double murder.

Episode: Gethsemane
4X24
Director: R.W. Goodwin
Writer: Chris Carter
An anthropolotgist finds what could be an extraterrestrial life form which has been frozen in ice, so Mulder and Scully go in search for the truth which could cost one of them their life....