On screen
Cast
23 credited performers
Marshall Thompson
Major Jeff Cummings
Kynaston Reeves
Prof. R. E. Walgate
Kim Parker
Barbara Griselle
Stanley Maxted
Col. Butler
Terry Kilburn
Capt. Al Chester
Artwork unavailable
James Dyrenforth
Mayor Hawkins
Artwork unavailable
Robert MacKenzie
Const. Howard Gibbons
Peter Madden
Dr. Bradley
Artwork unavailable
Gil Winfield
Dr. Warren
Michael Balfour
Sgt. Kasper
Artwork unavailable
Launce Maraschal
Melville
Meadows White
Ben Adams
Artwork unavailable
E. Kerrigan Prescott
Atomic Engineer
Artwork unavailable
Lala Lloyd
Amelia Adams
Artwork unavailable
Shane Cordell
Nurse
Artwork unavailable
Sheldon Allan
Sentry (uncredited)
Artwork unavailable
Alexander Archdale
Minister (uncredited)
Artwork unavailable
Eddie Boyce
Jacques Griselle (uncredited)
Artwork unavailable
Victor Hagan
Villager (uncredited)
Artwork unavailable
Victor Harrington
Villager (uncredited)
Artwork unavailable
Jack Hetherington
Sergeant in Office (uncredited)
Artwork unavailable
Richard Neller
Townsman (uncredited)
Tom Watson
Technical Sergeant (uncredited)