Directed by
| Roy Del Ruth | ||
Writing Credits (in alphabetical order)
| Arthur Caesar | ... | (dialogue) |
| Arthur Caesar | ... | (screenplay) |
| Oliver H.P. Garrett | ... | (dialogue) |
| Oliver H.P. Garrett | ... | (screenplay) |
| Anthony Paul Kelly | ... | (play) |
Cast (in credits order)
| Constance Bennett | ... | Frances Hawtree / Z-1 | |
| Erich von Stroheim | ... | Valdar / Schiller / Blecher | |
| Anthony Bushell | ... | Capt. Arthur Chamberlain | |
 |
William Holden | ... | Sir Winston Chamberlain |
| William Courtenay | ... | Mr. Yates | |
| Charlotte Walker | ... | Lady Catherine Chamberlain | |
| Crauford Kent | ... | General Hewlett | |
| Rest of cast listed alphabetically: | |||
|
|
Ullrich Haupt | ... | German Colonel (uncredited) |
| Paul Panzer | ... | 'Kirsch' the Decoy (uncredited) | |
| Wilhelm von Brincken | ... | Capt. Kugler (uncredited) | |
Produced by
| Darryl F. Zanuck | ... | producer |
Music by
| Paul Lamkoff | ... | (uncredited) |
Cinematography by
| Barney McGill | ||
Editing by
| William Holmes | ||
Costume Design by
| Earl Luick | ||
Sound Department
| Harry D. Mills | ... | sound recording engineer |
Music Department
| Louis Silvers | ... | conductor: Vitaphone Orchestra |
