| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alan Crosland | Crew | Directing | Director |
 E. Phillips Oppenheim | Crew | Writing | Novel |
Eve Greene | Crew | Writing | Screenplay |
Frank Wead | Crew | Writing | Screenplay |
 Franz Waxman | Crew | Sound | Music |
 Milton Krasner | Crew | Camera | Director of Photography |
Fred S. Meyer | Crew | Production | Executive Producer |
Roswell A. Hoffmann | Crew | Camera | Assistant Camera |
Charles Carroll | Crew | Sound | Sound Recordist |
Camille Collins | Crew | Production | Production Secretary |
 Adolph Milar | Cast | Actor | German (uncredited) |
 Brandon Hurst | Cast | Actor | Middleton |
 Charles Waldron | Cast | Actor | Sir Ivan Brunn |
 Claude King | Cast | Actor | Sir Gerald Hume |
David Dunbar | Cast | Actor | English Farmer (uncredited) |
 Douglas Wood | Cast | Actor | Lord Allison (uncredited) |
 Dwight Frye | Cast | Actor | Roger Unthank (uncredited) |
 Edmund Lowe | Cast | Actor | Sir Everard Dominey / Baron Leopold von Ragostein |
 Esther Dale | Cast | Actress | Mrs. Unthank |
Frank Benson | Cast | Actor | English Farmer (uncredited) |
 Frank Reicher | Cast | Actor | Dr. Trenk |
 Frank Terry | Cast | Actor | Villager (uncredited) |
Harry Allen | Cast | Actor | Perkins |
 Harry Worth | Cast | Actor | Hugo (uncredited) |
 Henry Mollison | Cast | Actor | Eddie Pelham |
 Ivan F. Simpson | Cast | Actor | Dr. Harrison |
 Larry Steers | Cast | Actor | Army Officer (uncredited) |
 Leonard Mudie | Cast | Actor | Mangan |
 Leonid Snegoff | Cast | Actor | Wolff (uncredited) |
Lowden Adams | Cast | Actor | Waiter (uncredited) |
 Lumsden Hare | Cast | Actor | Duke Henry |
 Murray Kinnell | Cast | Actor | Seaman |
 Nan Grey | Cast | Actress | Middleton's Daughter (uncredited) |
 Pat O'Hara | Cast | Actor | Chauffeur (uncredited) |
 Priscilla Lawson | Cast | Actress | Maid (uncredited) |
 Robert Bolder | Cast | Actor | Villager (uncredited) |
 Spring Byington | Cast | Actress | Duchess Caroline |
Thomas R. Mills | Cast | Actor | Bartender (uncredited) |
 Tom Ricketts | Cast | Actor | Villager (uncredited) |
 Valerie Hobson | Cast | Actress | Eleanor Dominey |
 Virginia Hammond | Cast | Actress | Lady Hume (uncredited) |
 Wera Engels | Cast | Actress | Princess Stephanie Elderstrom |
 Willy Castello | Cast | Actor | Duval (uncredited) |
| Person | Type | Job | Role(s) |
