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Stewart Granger as Superintendent Cooper Smith |
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Susan Hampshire as Trudy Emberday |
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Cathleen Nesbitt as Livia Emberday |
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James Culliford as Luke Emberday |
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Brigitte Horney as Oberin |
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Robert Morley as Hubert Hamlyn |
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Sophie Hardy as Sophie |
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Colin Gordon as Dice |
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Eddi Arent as Clossen |
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Diane Clare as Clare |
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Allan Cuthbertson as Det. Thompson |
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Caroline Blakiston as Nun |
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Richardina Jackson as Nun |
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Yuri Borienko as Nailer |
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Conrad Monk as Pasco |
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John Barrett as Guide |
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Jeremy Hawk as Bank Manager |
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James Robertson Justice as Sir John (voice) |
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Monika Dietrich as Photographic Model |
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Joseph Cuby as |
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Inigo Jackson as |
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Russell Waters as |
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Tom Bowman as |
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Carmen Dene as |
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Carol Dilworth as |
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Siegfried Schürenberg as Sir John |
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Karen Young as |
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Pauline Chamberlain as |
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Maurice Connor as |
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Peter Hannon as |
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Cicely Paget-Bowman as |
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Harry Phipps as |
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Peter Roy as |
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Alan Stuart as |
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John Tatham as |
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Hilary Wontner as |
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Fred Wood as |
| Directing | Cyril Frankel | Director |
| Production | Horst Wendlandt | Producer |
| Writing | Edgar Wallace | Novel |
| Writing | Derry Quinn | Screenplay |
| Writing | Stanley Munro | Screenplay |
| Editing | Oswald Hafenrichter | Editor |
| Camera | Harry Waxman | Director of Photography |
| Production | Ian Warren | Executive Producer |
| Sound | Peter Thomas | Original Music Composer |
| Art | Roy Stannard | Art Direction |
| Art | Hazel Peiser | Set Decoration |
| Costume & Make-Up | Barbara Barnard | Hairstylist |
| Costume & Make-Up | Aldo Manganaro | Makeup Artist |
| Crew | Ted Samuels | Special Effects |