Hugh Marlowe as John Borden

Nancy Gates as Garnet

Rod Taylor as Herbert Ellis

Lisa Montell as Deena

Nelson Leigh as Dr Eldon Galbraithe

Christopher Dark as Henry Jaffe

Everett Glass as Timmek

Booth Colman as Mories

Shirley Patterson as Elaine

Stanley Fraser as Elda

William Vedder as James (uncredited)

Mickey Simpson as Naga (uncredited)

Keith Richards as Slave (uncredited)

Michael Garth as Military Officer (uncredited)

Nancy Howard as Mrs. Jaffe (uncredited)

Mimi Gibson as Ginny Jaffe (uncredited)

Hugh Corcoran as Jaffe's Son (uncredited)

David Alpert as Public Relations Officer (uncredited)

John Close as Reporter (uncredited)

Walter Conrad as Reporter (uncredited)

Don Kennedy as Reporter (uncredited)

Herb Vigran as Reporter (uncredited)

John Hiestand as TV Newscaster (uncredited)

William Forman as Radio Announcer (uncredited)

John Bleifer as Jule (uncredited)

Rankin Mansfield as Beryl (uncredited)

Strother Martin as Nihka (uncredited)

Paul Brinegar as Vida (uncredited)