- Sally Eilers
- Irene Eaton
- Allan Lane
- James Huntley
- Fritz Leiber
- Dr. Krull
- Frank M. Thomas
- Col. John Shaw
- Theodore von Eltz
- Col. Page
- Addison Richards
- Everett Brock
- Larry J. Blake
- Ben Dawson
- Pierre Watkin
- Col. Wilson
- Louis Jean Heydt
- Gillian
- Spencer Charters
- Lucius
- Leona Roberts
- Ella
- Charles Halton
- Beldon
- Alec Craig
- Canby
- Stanley Blystone
- Detective
- Harry Joe Brown Jr.
- Young Boy
- Hal Craig
- Motorcycle Policeman
- Robert Fiske
- Davis
- Bess Flowers
- Plane Crash Spectator
- Christian J. Frank
- Henchman Tailing Irene
- Bud Geary
- Policeman
- Harrison Greene
- Man on Train Wanting 'Less Red Tape'
- Roger Hunt
- Minor Role
- Mike Lally
- Henchman
- Harold Miller
- Bar Patron at Club Dome
- Howard M. Mitchell
- Police Captain
- Edmund Mortimer
- Man with Senator in the Dome Cafe
- Pat O'Malley
- Intelligence Service Man
- Grady Sutton
- Quiet Man on Train
- Richard Tucker
- Colonel at Explosion
- William Worthington
- Senator in the Dome Cafe
