The X-Files
Zero Sum
Season 4, Episode 21 · Aired 1997-04-27
Synopsis
Skinner destroys evidence to cover up a woman's death and poses as Agent Mulder to complete the task. Mulder finds out about Skinner's deception and confronts him and Skinner reveals that he is working for the Cigarette Smoking Man in order to obtain a possible cure for Scully's cancer.
In the series
This episode is part of The X-Files (1993–2002) on Fox.
Trust no one — monster nights and mythology Sundays.
Key cast
- David Duchovny as Fox Mulder
- Gillian Anderson as Dana Scully
- Mitch Pileggi as Walter Skinner
- Robert Patrick as John Doggett
- Annabeth Gish as Monica Reyes