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The fourth season of the The X-Files commenced airing on the FOX network in the United States on October 4, 1996, concluding on the same channel on May 18, 1997, and contained 24 episodes. Soon after season four had finished airing, production began on The X-Files: Fight the Future, the first feature length film of The X-Files franchise.



Episodes marked with a double dagger (‡) are episodes in the series' Alien Mythology arc.

No. Episode Name / Summary
Herrenvolk2 4x01 "Herrenvolk"

To save his dying mother, Mulder must protect the extraterrestrial healer, Jeremiah Smith, from a ruthless alien bounty hunter. (Part 2 of 2)

Home 4x02 "Home"

In a small, otherwise peaceful town, the agents investigate the death of an infant with disturbing birth defects, and the trail leads to a clan of inbred, genetic mutants.

Teliko 4x03 "Teliko"

When several black men turn up dead, their bodies are completely devoid of skin pigmentation. Mulder and Scully hunt down an African killer, who must consume human hormones to survive.

Unruhe 4x04 "Unruhe"

To catch a twisted killer, Mulder and Scully attempt to decipher the clues he unwittingly leaves behind; psychic photographs revealing his darkest fears.

Thefieldwhereidied 4x05 "The Field Where I Died"

While investigating a religious cult, Mulder encounters a woman whom he may have known in a previous life.

Sanguinarium 4x06 "Sanguinarium"

A series of murders at a prestigious hospital lead Mulder and Scully on the trail of a plastic surgeon who may be attempting to extend his own life through black magic.

Musings 4x07 "Musings of a Cigarette Smoking Man"

The secret history of Mulder and Scully's shadowy nemesis reveals the truth behind several historical mysteries.

Black cancer in Fox Mulder 4x08 "Tunguska"

When a deadly, viscous organism is discovered inside a strange rock, the agents race to determine the rock's origin. (Part 1 of 2)

Terma 4x09 "Terma"

To gain tangible proof the organism inside the rock is an alien entity, Mulder joins forces with Alex Krycek and faces the depths of his deception. (Part 2 of 2)

Paperhearts 4x10 "Paper Hearts"

Seemingly prophetic dreams send Mulder on a search for the undiscovered victims of a serial killer.

Elmundogira 4x11 "El Mundo Gira"

After a series of paranormal deaths occur at a Mexican migrant camp, Mulder and Scully trail the mythical creature known as "El Chupacabra."

Leonardbetts 4x12 "Leonard Betts"

The agents suspect a man to be an evolutionary freak capable of regeneration.

Neveragain 4x13 "Never Again"

Scully begins dating a dangerous stranger whose jealous tattoo compels him to murder the women he encounters.

Mementomori 4x14 "Memento Mori"

Scully attempts to come to terms with her inoperable cancer, while Mulder and the Lone Gunmen race to find the cure.

Kaddish 4x15 "Kaddish"

While investigating a hate crime in a Hasidic Jewish community, the agents uncover a murder that appears to have been committed by a dead man.

Unrequited 4x16 "Unrequited"

Mulder and Scully must apprehend an embittered Vietnam vet who can make himself invisible to his victims.

Tempusfugit 4x17 "Tempus Fugit"

The agents investigate the unexplained crash of a commercial airliner. (Part 1 of 2)

Max 4x18 "Max"

Mulder and Scully set out to prove the passengers aboard the airliner were sacrificed by the military in pursuit of stolen alien technology. (Part 2 of 2)

Synchrony 4x19 "Synchrony"

When several scientists are found frozen to death, Mulder and Scully suspect the murders were committed by a time traveller.

Small Potatoes - doctor and baby 4x20 "Small Potatoes"

A town is placed under suspicion when its babies are born with vestigial tails.

Zero Sum - FBI agent 4x21 "Zero Sum"

Trapped in a deal to save Scully's life, Skinner helps the cigarette-smoking man destroy evidence in a fatal bee attack, only to discover he's been framed for murder.

Elegy 4x22 "Elegy"

When ghostly images of female victims appear near murder scenes, the apparitions may be harbingers of death for those who see them.

Demons 4x23 "Demons"

Covered in blood and suffering from amnesia, Mulder pieces together the events of the last few days.

Gethsemane 4x24 "Gethsemane"

Mulder fights to prove that a discovery frozen in the mountains of Canada is irrefutable evidence of alien life. (Part 1 of 3)


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