The X-Files

Season 4 Episode 21

Zero Sum

Aired Wednesday 8:00 PM Apr 27, 1997 on FOX

Trivia

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  • Trivia

    • At 23:31 into the episode, Walter Skinner is flipping through files in Mulder's office. Only one file has a visible name tag. If you look closely it says the name Foo Fighters. It is in reference to actual foo fighters, not the band.