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Jean Simmons as Vicky Barton |
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Dirk Bogarde as George Hathaway |
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David Tomlinson as Johnny Barton |
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Marcel Poncin as Narcisse |
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Cathleen Nesbitt as Madame Hervé |
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Honor Blackman as Rhoda O'Donovan |
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Zena Marshall as Nina |
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André Morell as Doctor Hart |
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Betty Warren as Mrs. O'Donovan |
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Eugene Deckers as Day Porter |
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Felix Aylmer as British Consul |
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Austin Trevor as Police Commissaire |
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Natasha Sokolova as Charlotte |
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Nelly Arno as Madame Verni |
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Michael Ward as Pilkington |
| Directing | Antony Darnborough | Director |
| Directing | Terence Fisher | Director |
| Writing | Hugh Mills | Writer |
| Writing | Anthony Thorne | Writer |
| Camera | Reginald H. Wyer | Director of Photography |
| Production | Betty E. Box | Producer |
| Production | Sydney Box | Producer |
| Sound | Benjamin Frankel | Music |
| Editing | Gordon Hales | Editor |
| Art | George Provis | Supervising Art Director |
| Art | Cedric Dawe | Art Direction |
| Costume & Make-Up | Elizabeth Haffenden | Costume Design |
| Camera | David Harcourt | Camera Operator |
| Crew | Les Bowie | Special Effects |
| Crew | Bill Warrington | Special Effects |
| Sound | Gordon K. McCallum | Sound Mixer |
| Costume & Make-Up | George Blackler | Makeup Artist |
| Sound | George Paternoster | Boom Operator |
| Sound | Fred Ryan | Boom Operator |
| Sound | Benjamin Frankel | Original Music Composer |
