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Sam Wanamaker as Nick Delaney |
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Mandy Miller as Katie Martin |
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André Morell as Chief Inspector Blake |
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Marian Spencer as Aunt Doris Porter |
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Jan Miller as Margaret O'Neill |
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Richard O'Sullivan as John Martin |
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Wyndham Goldie as Doctor Scott |
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Henry Caine as Superintendent |
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Aimée Delamain as Miss Lyons |
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John Miller as Toy Shop Assistant |
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Harold Berens as Frank Farmer |
| Writing | Cy Endfield | Screenplay |
| Directing | Cy Endfield | Director |
| Editing | Jack Slade | Editor |
| Production | Benjamin Fisz | Producer |
| Writing | Robert Brenon | Story |
| Art | Scott MacGregor | Art Direction |
| Camera | Jack Asher | Director of Photography |
| Sound | Phil Cardew | Original Music Composer |
| Directing | Douglas Hickox | Assistant Director |
