A talented American actress enlists the help of the famed Belgian detective, Hercule Poirot, to negotiate a divorce from her husband, Lord Edgware, only to find him the next day stabbed to death in his library. Who would want him dead?
| Costume & Make-Up | Louis Brooks | Costume Design |
| Writing | H. Fowler Mear | Screenplay |
| Writing | Agatha Christie | Novel |
| Directing | Henry Edwards | Director |
| Camera | Sydney Blythe | Director of Photography |
| Production | Julius Hagen | Producer |
| Art | James A. Carter | Art Direction |
| Sound | Baynham Honri | Sound Recordist |
| Editing | Michael C. Chorlton | Editor |
| Directing | Arthur Barnes | Assistant Director |
| Costume & Make-Up | Charles | Hairstylist |
| Sound | W.L. Trytel | Music Director |
