George C. Scott
John Russell
Acting
Trish Van Devere
Claire Norman
Acting
Melvyn Douglas
Senator Carmichael
Acting
John Colicos
Captain DeWitt
Acting
Barry Morse
Parapsychologist
Acting
Madeleine Sherwood
Mrs. Norman
Acting
Helen Burns
Leah Harmon
Acting
Eric Christmas
Albert Harmon
Acting
Frances Hyland
Mrs. Grey
Acting
Ruth Springford
Minnie Huxley
Acting
James B. Douglas
Eugene Carmichael
Acting
J. Kenneth Campbell
Security Guard
Acting
Roberta Maxwell
Eva Lingstrom
Acting
Bernard Behrens
Robert Lingstrom
Acting
Jean Marsh
Joanna Russell
Acting
Chris Gampel
Mr. Tuttle
Acting
Voldi Way
Joseph Carmichael
Acting
Michelle Martin
Kathy Russell
Acting
Janne Mortil
Linda Grey
Acting
Terence Kelly
Sergeant Durban
Acting
Robert Monroe
Archives Clerk
Acting
Hagan Beggs
Coroner
Acting
Anna Hagan
Secretary
Acting
Antonia Rey
Estancia
Acting
Sammy Smith
Doorman
Acting
Paul Rothery
Tony Grey
Acting
Bruce MacLeod
Security Guard
Acting
Fred Latremouille
Airport Guard
Acting
David Peevers
Microfilm Clerk
Acting
Sera Johnstone
Sara Lingstrom
Acting
Adam Earle
Adam Lingstrom
Acting
Carl Boychuk
Music Student #1
Acting
Bryan King
Music Student #2
Acting
Susan Round
Music Student #3
Acting
Nicki Steida
Music Student #4
Acting
Randolph Blankinship
Pilot #1
Acting
Travis Major
Pilot #2
Acting
Kyle MacLachlan
(Uncredited)
Acting