Cast
- Boris Karloff as Dr. Charles Gaudet
- Nedda Harrigan as Madame Lucien
- James Stephenson as Col. Armand Lucien
- Adia Kuznetzoff as Pierre
- Rolla Gourvitch as Collette
- Will Stanton as Bobo
- Edward Keane as Dr. Duval
- Robert Warwick as Demonpre
- Pedro de Cordoba as Marcal
- Tom Wilson as Emil
Crew
- William Clemens · Director
- Kenneth Gamet · Writer
- Don Ryan · Writer
- Anthony Coldeway · Writer
- Raymond L. Schrock · Writer
- George Barnes · Cinematographer
- Frank Magee · Editor