Following her father's death, a teenage heiress moves in with her guardian uncle who is broke and schemes to murder his niece for her vast inheritance.
| Writing | Sheridan Le Fanu | Novel |
| Writing | Ben Travers | Screenplay |
| Sound | Alan Rawsthorne | Music |
| Editing | Ralph Kemplen | Editor |
| Production | Irene Howard | Casting |
| Art | Laurence Irving | Production Design |
| Art | Ralph Brinton | Art Direction |
| Costume & Make-Up | Elizabeth Haffenden | Costume Design |
| Camera | Robert Krasker | Director of Photography |
| Directing | Anthony Hearne | Second Assistant Director |
| Sound | Fred Ryan | Boom Operator |
| Directing | Peter Bolton | Assistant Director |
| Camera | Robert Huke | Camera Operator |
| Sound | Kenneth Heeley-Ray | Sound Editor |
| Sound | John Cook | Sound Recordist |
| Sound | Desmond Dew | Sound Recordist |
| Crew | Henry Harris | Special Effects |
| Crew | George Blackwell | Special Effects |
| Sound | Muir Mathieson | Conductor |
| Production | Jack Hicks | Associate Producer |
| Production | John W. Gossage | Production Manager |
| Production | Laurence Irving | Producer |
| Production | Josef Somlo | Producer |
| Directing | Charles Frank | Director |
