cast
- Richard Arlen
- Dan Kendall
- Mikhail Rasumny
- Christmas
- John Gallaudet
- Maj. Xanders
- Harry Worth
- Dr. Vidalek
- Thornton Edwards
- Felig
- Bobby Dillon
- Nando
- Evelyn Brent
- Doctor's Housekeeper
- Nils Asther
- Col. Jan Golas
- Harold Goodwin
- Petchnikoff
- J. Carrol Naish
- Andros Banshek
- Eva Gabor
- Johanna Van Deuren
- Victor Varconi
- Hendrick Van Deuren
- John Miljan
- Gen. Valdane
- Frank Yaconelli
- Zomar
crew
- Gordon Wiles
- Director
- William C. Thomas
- Producer
- William Pine
- Producer
- Edward Churchill
- Screenwriter
- Maxwell Shane
- Screenwriter
- John Alton
- Cinematographer
- Dimitri Tiomkin
- Composer (Music Score), Musical Direction/Supervision
- Robert O. Crandall
- Editor
- F. Paul Sylos
- Art Director
- Fred Jackman, Sr.
- Special Effects
