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Barbara Payton as Lena / Helen |
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James Hayter as Dr. Harvey |
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Stephen Murray as Bill |
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John Van Eyssen as Robin |
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Percy Marmont as Sir Walter |
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Kynaston Reeves as Lord Grant |
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Edith Saville as Lady Grant |
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John Stuart as Solicitor |
| Sound | Malcolm Arnold | Original Music Composer |
| Production | Alexander Paal | Producer |
| Directing | Terence Fisher | Director |
| Camera | Reginald H. Wyer | Director of Photography |
| Production | Michael Carreras | Producer |
| Writing | Terence Fisher | Screenplay |
| Costume & Make-Up | Nina Broe | Hairstylist |
| Writing | William F. Temple | Novel |
| Costume & Make-Up | Dick Bonnor-Morris | Makeup Artist |
| Camera | Len Harris | Camera Operator |
| Directing | Renée Glynne | Script Supervisor |
| Writing | Paul Tabori | Adaptation |
| Art | J. Elder Wills | Art Direction |
| Editing | Maurice Rootes | Editor |
| Sound | Bill Salter | Sound Recordist |
