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Brian Donlevy as Henri Delambre |
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George Baker as Martin Delambre |
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Carole Gray as Patricia 'Pat' Stanley |
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Yvette Rees as Wan |
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Burt Kwouk as Tai |
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Charles Carson as Inspector Charas |
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Rachel Kempson as Madame Fournier |
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Warren Stanhope as Hotel Manager |
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Michael Graham as Albert Delambre |
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Reed Hadley as Ike |
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Jeremy Wilkin as Inspector Ronet |
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Mary Manson as Judith Delambre |
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Mia Anderson as Nurse |
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Arnold Bell as Hotel Porter |
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Stan Simmons as Heavyset Creature |
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John Bloom as Nolya |
| Directing | Don Sharp | Director |
| Writing | Harry Spalding | Writer |
| Camera | Basil Emmott | Director of Photography |
| Editing | Robert Winter | Editor |
| Writing | George Langelaan | Characters |
| Costume & Make-Up | John O'Gorman | Makeup Artist |
| Costume & Make-Up | Barbara Barnard | Hairdresser |
| Production | Teresa Bolland | Production Manager |
| Directing | Gordon Gilbert | Assistant Director |
| Directing | Alex Carver-Hill | Second Assistant Director |
| Costume & Make-Up | Harold Fletcher | Special Effects Makeup Artist |
| Camera | Frank Drake | Camera Operator |
| Sound | Johnny Pearson | Orchestrator |
| Art | Francis Rodker | Title Designer |
| Production | Robert L. Lippert | Producer |
| Production | Jack Parsons | Producer |
| Sound | Bert Shefter | Original Music Composer |
| Art | Harry White | Art Direction |
| Crew | Harold Fletcher | Makeup Effects |
