Two F.B.I. Agents, Fox Mulder the believer and Dana Scully the skeptic, investigate the strange and unexplained, while hidden forces work to impede their efforts.
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Creator
Chris Carter
Cast
David Duchovny as Fox Mulder
Gillian Anderson as Dana Scully
Robert Patrick as John Doggett (seasons 8–9)
Annabeth Gish as Monica Reyes (season 9; also starring season 8; guest seasons 10–11)
Mitch Pileggi as Walter Skinner (season 9–11; also starring seasons 3–8; recurring season 2; guest season 1)
William B. Davis as Cigarette Smoking Man (seasons 4–7, 9; recurring seasons 1–3, 10–11)
Nicholas Lea as Alex Krycek (seasons 5–9; recurring seasons 2–3; guest season 4)
Chris Owens as Jeffrey Spender (season 6; recurring season 5; guest seasons 9, 11)
James Pickens Jr. as Alvin Kersh (season 9; recurring seasons 6, 8; guest season 11)