Chris Cronyn
Peter Graves
Linda Cronyn
Andrea King
Maj. Gen. George Burdette
Tom Keene
Mine Owner
Colin Kenny
Dr. Boulting - Mitchell's Assistant
House Peters Jr.
Franz Calder
Herbert Berghof
Arjenian
Marvin Miller
Stewart Cronyn
Orley Lindgren
Admiral Bill Carey
Walter Sande
President
Willis Bouchey
Secretary of Defense Sparks
Morris Ankrum
Russian Official (uncredited)
George Blagoi
Roger Cronyn
Bayard Veiller
Editor
Francis D. Lyon
Director of Photography
Joseph F. Biroc
Writer
John L. Balderston
Anthony Veiller
Producer
Director
Harry Horner
Makeup Supervisor
Don L. Cash
Set Decoration
Murray Waite
Sound Engineer
Victor B. Appel
Art Direction
Charles D. Hall
Donald Hyde
Original Music Composer
Mahlon Merrick
Assistant Director
Emmett Emerson