David Duchovny
Fox Mulder (archive footage) (uncredited), Fox Mulder, Fox Mulder (uncredited)
Mitch Pileggi
Walter Skinner, Walter Skinner / SS Sturmbannfuehrer
William B. Davis
CGB Spender, Cigarette Smoking Man, SS Oberfuehrer / Smoking Man, Cancer Man
Bruce Harwood
John Fitzgerald Byers, John Fitzgerald Byers (voice)
James Pickens Jr.
Alvin Kersh, Alvin Kersh / Jamaican Crewman
Sheila Larken
Margaret Scully (voice) (uncredited), Margaret Scully
Chris Owens
Young Cigarette Smoking Man, Daniel Miller / Jeffrey Spender, Mutato, Jeffrey Spender, Young Smoking Man, Jeffrey Spender / SS Untersturmfuehrer, FBI Special Agent Jeffrey Spender
Steven Williams
Mr. X (voice) (uncredited), Mr. X
Don S. Williams
1st Elder, Elder #1, Elder
Bill Dow
Chuck Burks, Pangborn, Charles Burks, Chuck Burk, Dr. Rick Newton, Dad
Mimi Rogers
Agent Diana Fowley (uncredited), Agent Diana Fowley
Morris Panych
Gray Haired Man, Dr. Simon Auerbach
Arlene Pileggi
1st Woman Party-Goer, Skinner's Assistant
William MacDonald
Officer Trott, Dr. Oppenheim, Deputy Buddy Riggs, Agent Kazanjian, Federal Marshall
Bonnie Hay
Field Doctor, Night Nurse (uncredited), Woman, Night Nurse
Malcolm Stewart
Commander Carver, Dr. Glass, Agent Bonnecaze, Dr. Sacks
Alex Diakun
Tarot Dealer, Dr. Fingers, Manager, Curator, Buddy / Devil
Doug Abrahams
Harbaugh, Detective Neary, Agent #2, Patrolman #1, Paul Vitaris
Charles Cioffi
Section Chief Scott Blevins
Roger Cross
Officer Wentworth, Agent Rice, Officer Green (uncredited), Private Kittel, Swat Lieutenant
