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Sonia Dresdel as Steffy Millington |
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Guy Middleton as Inspector Mallory |
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Hubert Gregg as Jack Kurton |
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Colin Gordon as Bill Millington |
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Karl Stepanek as Richard Carling |
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Eleanor Summerfield as Vera Kurton |
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John Slater as James C. Oliver |
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Michael Martin Harvey as Hewson (as Michael Martin-Harvey) |
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Cyril Smith as Detective Horton |
| Directing | Maurice Elvey | Director |
| Costume & Make-Up | Betty Sherriff | Hairstylist |
| Costume & Make-Up | Aldo Manganaro | Makeup Artist |
| Camera | Stephen Dade | Director of Photography |
| Editing | Helen Wiggins | Editor |
| Art | George Haslam | Art Direction |
| Production | Ernest Gartside | Producer |
| Writing | Gerald Anstruther | Screenplay |
| Writing | David Evans | Writer |
| Writing | Gerald Anstruther | Theatre Play |
