Directed by
| Karel Lamac | ... | (as Carl Lamac) |
| Martin Fric | ... | (co-director) (as Mac Fric) |
Writing Credits
| Edgar Wallace | ... | (novel) |
| Knut Borries | ||
| Gigotte Walter | ||
Cast (in credits order)
| Paul Richter | ... | Inspektor Wenbury | |
| Maria Matray | ... | Mary Lenley (as Maria Solveg) | |
| Carl Walther Meyer | ... | John Lenley | |
| Wera Engels | ... | Cora Ann Milton | |
| Fritz Rasp | ... | Maurice Meister | |
| Paul Henckels | ... | Hauptinspektor Bliss | |
 |
Leopold Kramer | ... | Polizeiarzt Dr. Lomond |
| Karl Etlinger | ... | Sam Hackitt | |
|
|
Karl Forest | ... | Oberst Walford |
|
|
Franz Schafheitlin | ... | Wachtmeister Carter |
Produced by
| Artur Hohenberg | ... | supervising producer |
| Karel Lamac | ... | producer (as Carl Lamac) |
| Anny Ondra | ... | producer |
Music by
| Jára Benes | ||
| Artur Guttmann | ||
Cinematography by
| Otto Heller | ||
Editing by
| Ella Ensink | ||
Art Direction by
| Heinz Fenchel | ||
Production Management
| Adolf Rosen | ... | production manager |
Second Unit Director or Assistant Director
| W.L. Bagier | ... | first assistant director |
Sound Department
| Alfred Norkus | ... | sound |
Music Department
| Fritz Löhner-Beda | ... | lyricist |
Additional Crew
| Karl Forest | ... | dialogue director |
