Desperate to prove his father innocent of treason, a secretary arranges a clandestine assignation with his employer's wife in order to get the proof he needs. But the plan goes awry when he becomes implicated in her sudden death.
| Directing | Michael Powell | Director |
| Writing | Walter Ellis | Theatre Play |
| Writing | Ian Dalrymple | Adaptation |
| Camera | Leslie Rowson | Director of Photography |
| Art | J. Elder Wills | Art Direction |
| Editing | Ian Dalrymple | Editor |
| Editing | Sidney Stone | Assistant Editor |
| Sound | George Burgess | Sound Recordist |
| Directing | John Mallinson | Assistant Director |
| Production | Geoffrey Rowson | Production Manager |
| Camera | Harry Gillam | Camera Operator |