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
Writer
John L. Balderston
Producer
Anthony Veiller
Director
Harry Horner
Director of Photography
Joseph F. Biroc
Original Music Composer
Mahlon Merrick
Set Decoration
Murray Waite
Assistant Director
Emmett Emerson
Donald Hyde
Art Direction
Charles D. Hall
Sound Engineer
Victor B. Appel
Makeup Supervisor
Don L. Cash