Sally Eilers
Claire Martel
Acting
Donald Woods
Joel Grant / Joseph Elmer
Acting
Eduardo Ciannelli
Dr. Victor Martel
Acting
Victor Kilian
Guissart
Acting
Charles Halton
Commandant
Acting
Dick Curtis
Jules
Acting
John Tyrrell
Gerault
Acting
Eddie Laughton
Brisson
Acting
Edmund Cobb
Quarry Guard
Acting
Robert Warwick
Governor
Acting
Lloyd Bridges
Rene (uncredited)
Acting
Byron Foulger
Presidente Judge (uncredited)
Acting