Charles Drake
Dr. Ralph Harrison
Karin Booth
Janice Roberts
Billy Chapin
Brian 'Gadge' Roberts
Taylor Holmes
Prof. Arnold Nordstrom
Steven Geray
The Foreign Spy-Chief
Henry Kulky
Paul (Spy Henchman)
Franz Roehn
Karl
Hal Baylor
Max (Spy Henchman)
William Schallert
Johnston - a Reporter
Lyle Talbot
An Admiral
