Discover

Richard Eyer
Timmie Merrinoe

Philip Abbott
Dr. Tom Merrinoe

Diane Brewster
Mary Merrinoe

Harold J. Stone
Gen. Swayne

Robert H. Harris
Prof. Frank Allerton
Dennis McCarthy
Col. Macklin

Alexander Lockwood
Arthur Kelvaney
John O'Malley
Prof. Baine

Gage Clarke
Dr. Bannerman

Than Wyenn
Prof. Zeller
Jefferson Dudley Searles
Prof. Foster
Alfred Linder
Martin / Computer

Ralph Votrian
1st Gate Sergeant

Michael Miller
2nd Gate Sergeant

Rayford Barnes
Capt. McLaren (uncredited)

Helen Kleeb
Miss Vandergrift (uncredited)

Alvy Moore
Scientist (uncredited)

Gary Vinson
Young soldier (uncredited)

Marvin Miller
Robby the Robot (voice) (uncredited)
Camera
Harold E. Wellman
Director of Photography
Directing
Herman Hoffman
Director
Camera
Harold E. Wellman
Director of Photography
Directing
Herman Hoffman
Director