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Paul Henreid as Hugo Bishop |
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Lois Maxwell as Thelma Speight / Tasman |
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Kieron Moore as Mervyn Speight |
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Hugh Sinclair as Maurice Jerrard |
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Lloyd Lamble as Inspector "Freddie" Frisnay |
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Anthony Forwood as Rex |
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Bill Travers as Victor Tasman |
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Mary Laura Wood as Susie Martin |
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Kay Kendall as Vera Corridge |
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Anna Turner as Marjorie |
| Directing | Terence Fisher | Director |
| Writing | Terence Fisher | Screenplay |
| Writing | Trevor Dudley-Smith | Novel |
| Writing | Paul Tabori | Screenplay |
| Writing | Paul Tabori | Adaptation |
| Editing | James Needs | Editor |
