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Hugh Williams as Alan Herriot |
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Francis L. Sullivan as Sir Julian Weyre |
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Viola Keats as Lady Avril Weyre |
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Sophie Stewart as Judy Weyre |
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John Laurie as Robb |
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Googie Withers as Effie |
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Felix Aylmer as Lord Carnforth |
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Cecil Parker as Sir Arthur Harding |
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Henry Caine as Inspector Marsh |
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Eliot Makeham as Dr. Rudd |
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Shayle Gardner as Boxall |
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Gerard Tyrell as Martin |
| Editing | Sidney Stone | Assistant Editor |
| Writing | Walter Ellis | Theatre Play |
| Production | Geoffrey Rowson | Production Manager |
| Camera | Leslie Rowson | Director of Photography |
| Sound | George Burgess | Sound Recordist |
| Editing | Ian Dalrymple | Editor |
| Writing | Ian Dalrymple | Adaptation |
| Directing | John Mallinson | Assistant Director |
| Camera | Harry Gillam | Camera Operator |
| Art | J. Elder Wills | Art Direction |
| Directing | Michael Powell | Director |
