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Zachary Scott as Richard Van Ness |
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Robert Beatty as Nick Talbot |
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Naomi Chance as Avril Talbot |
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Kay Kendall as Alexia LaRoche |
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Colin Tapley as Inspector Maxwell |
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Arthur Lane as Boyd Spencer |
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Harold Lang as Snell, the blackmailer |
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Diane Cilento as Jeannette |
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Ian Fleming as Mr. Talbot (uncredited) |
| Writing | Packham Webb | Novel |
| Production | Anthony Hinds | Producer |
| Sound | Malcolm Arnold | Music |
| Directing | Terence Fisher | Director |
| Writing | Trevor Dudley-Smith | Novel |
| Editing | James Needs | Editor |
| Writing | John Gilling | Screenplay |
| Camera | Walter J. Harvey | Director of Photography |
