cast
- Constance Bennett
- Carla/K-14
- Gilbert Roland
- Capt. Rudolph Ritter
- Edward Ellis
- Maj. Lieber
- Sam Godfrey
- Franz
- Mischa Auer
- Adjutant Lehar
- Ben Hendricks, Jr.
- Sgt. Probert
- Leonid Snegoff
- Pvt. Muller
- Evelyn C. Carrington
- Frau Stengel
- John Wray
- Maj. Mitika
- Selmar Jackson
- A Spy
- Landers Stevens
- Major
- Virginia Weidler
- Olga, Carla's Niece
- Vera Lewis
- Anna Huber, Cleaner
- Sam Harris
- German Officer
- George Davis
- Frenchman
- Frank Reicher
- Major, Medical Officer
- Edward Keane
- Intelligence Officer
- Lucien Prival
- Erlich
- Herman Bing
- Railroad Ticket Clerk
- Hooper Atchley
- Captured Contact
crew
- George Archainbaud
- Director
- Albert S. LeVino
- Screenwriter
- Jane Murfin
- Screenwriter
- Worthington Miner
- Screenwriter
- Charles Rosher Sr.
- Cinematographer
- Max Steiner
- Composer (Music Score), Musical Direction/Supervision
- Willaim Hamilton
- Editor
- Alfred Herman
- Art Director
- Van Nest Polglase
- Art Director
- H.N. Swanson
- Associate Producer
- Merian C. Cooper
- Executive Producer
