Season 4: Episode 18

Season 4: Episode 20

The X-Files (1993)

Season 4: Episode 19

Synchrony

TMDb

Air Date:

2025-12-06

Genre

Mystery Sci-Fi & Fantasy Crime

Release Date

1993

End Date

2018

Episode Description

A case involving a strange old man warning two scientists of events in the immediate future which come to pass (and the use of their experimental flash-freezing compound that does not exist yet) has Mulder believing that one of the scientists has come from the future to stop his own scientific breakthrough from becoming reality.

19,240Weekly views

19,240Monthly views

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4

1

Cast

Gillian Anderson

William B. Davis

The Jersey Devil

Ghost in the Machine

The Erlenmeyer Flask

Little Green Men

Duane Barry (1)

Die Hand Die Verletzt

Fearful Symmetry

The Blessing Way (2)

Clyde Bruckman's Final Repose

War of the Coprophages

Teso Dos Bichos

Jose Chung's "From Outer Space"

Talitha Cumi (1)

The Field Where I Died

Musings of a Cigarette Smoking Man

Tempus Fugit (1)

Unusual Suspects

The Post-Modern Prometheus

Christmas Carol (1)

The Red and the Black (2)

The Pine Bluff Variant

Dreamland II (2)

How the Ghosts Stole Christmas

Terms of Endearment

Two Fathers (1)

Three of a Kind

The Sixth Extinction (2)

The Sixth Extinction II: Amor Fati (3)

The Goldberg Variation

The Amazing Maleeni

Signs and Wonders

Sein Und Zeit (1)

First Person Shooter

This Is Not Happening (1)

Nothing Important Happened Today (1)

Nothing Important Happened Today II (2)

Lord of the Flies

Founder's Mutation

Mulder & Scully Meet the Were-Monster

My Struggle III

The Lost Art of Forehead Sweat

Nothing Lasts Forever

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