Cast

• David Duchovny — Agent Fox Mulder
• Gillian Anderson — Agent Dana Scully
• Mitch Pileggi — Assistant Director Walter Skinner
• John Neville — The Well-Manicured Man
• William B. Davis — The Cigarette-Smoking Man
• Dean Haglund — Langly
• Bruce Harwood — Byers
• Tom Braidwood — Frohike
• Martin Landau — Kurtzweil
• Jeffrey DeMunn — Bronschweig
• Blythe Danner — Cassidy
• Terry O'Quinn — Michaud
• Armin Mueller-Stahl — Strughold
• Lucas Black — Stevie
• Christopher Fennell — 2nd Boy
• Don S. Williams — Group Elder
• George Murdock — 2nd Elder
• Carrick O'Quinn — Primitive #2
• Tom Woodruff Jr. — Creature #1
• Greg Ballora — Creature #2
• Ted King — FBI Agent on Roof
• Luis Beckford — FBI Agent
• Gary Grubbs — Fire Captain Cooles
• Larry Joshua — DC Cop
• Scott Alan Smith — Technician
• Ian Ruskin — Well-Manicured Man's Valet
• Joel Traywick — Young Naval Guard
• Milton Johns — British Valet
• Larry Rippenkroeger — Towncar Driver
• Randy Hall — Windbreakered Agent
• Vanessa Morley — Young Samantha Mulder (archive footage)
• Steve Rankin — Field Agent
• Michael Shamus Wiles — Black-Haired Man
• Steven M. Gagnon — Last Agent Out
• Michael Krawic — 2nd Paramedic
• Glenne Headly — Barmaid