Cast & crew
The Duke in Darkness (1948)
Cast
| Andrew Osborn | Duke Santos |
| Henry Oscar | Duke Santos |
| Geoffrey Steele | Grassin |
| Bryan Coleman | Voulain |
| Hugh Falkus | Roubot |
| Frederick Ross | Brulart |
| Archie Angus | Skinny Dubois |
| Philip Ashley | Marteau |
| Patrick Boxill | Gribaud |
| Edward Chaffers | Count Andre |
Crew
| Patrick Hamilton | Original Story |
| Patrick Hamilton | Theatre Play |
| James Bould | Settings |
| Fred O'Donovan | Producer |