Bud Brewster
Michel Ray
Dave Brewster
Adam Williams
Sentry
Ty Hungerford
Joe Gamble
Russell Johnson
Saul Wahrman
David Bair
Ken Brewster
Johnny Crawford
John Benson
Mother
Helen Jay
Guard
Burt Metcalfe
Ann Brewster
Peggy Webber
Tim
John Washbrook
Hank Johnson
Jackie Coogan
Col. Manley
Richard Shannon
Dr. Wahrman
Raymond Bailey
Eadie Johnson
Sandy Descher
Maj. Thomas
Larry Pennell
Mr. James
Peter Baldwin
Editor
Terry O. Morse
Makeup Supervisor
Wally Westmore
Set Decoration
Sam Comer
Director
Jack Arnold
Screenplay
Bernard C. Schoenfeld
Director of Photography
Ernest Laszlo
Story
Tom Filer
Producer
William Alland
Original Music Composer
Van Cleave
Art Direction
Roland Anderson
Hal Pereira
Frank R. McKelvy