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