Sally Eilers

Character: Claire Martel

Donald Woods

Character: Joel Grant / Joseph Elmer

Eduardo Ciannelli

Character: Dr. Victor Martel

Victor Kilian

Character: Guissart

Charles Halton

Character: Commandant

Dick Curtis

Character: Jules

John Tyrrell

Character: Gerault

Eddie Laughton

Character: Brisson

Edmund Cobb

Character: Quarry Guard

Robert Warwick

Character: Governor

Lloyd Bridges

Character: Rene (uncredited)

Byron Foulger

Character: Presidente Judge (uncredited)