Tom Wright
Sally Markham
Hauron
Nadja
Woman Scientist
Major General Hollister
Captain Martin
Dr. Meister
Bob Hardin
Dr. Von Hoften (as Billy Greene)
Corporal Wilson
Newsboy
Shirley Carter
Elmer Wesson (as Brian F. Wood)
Switchboard Operator
Deputy Chief (as Lyle Felisse)
Deputy
Detective Allen