Don Murray

Dr. Alex Lauder

Ray Milland

Prof. Samuel Hale Constable

Gene Tierney

Lenore Constable

Ed Asner

Saul Wiener

Pamelyn Ferdin

Mary Constable

William Beckley

Arnold Watson Bessmer

Ivor Barry

Dr. Paul Cryder

George Macready

Dr. Frank Ferguson

John Carradine

Mr. Bosch

Virginia Christine

Helga

Frank Maxwell

General Augstadt

Hal Frederick

C.I.C. Technician

Bill Hickman

Enemy Agent