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Tom Conway as Tom Conway, Private Investigator |
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Mila Parély as Helen Pascall |
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Naomi Chance as Gina, a model |
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Eric Pohlmann as Mr. Mercedes |
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Andrew Osborn as Capt. Colin Simpson |
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Richard Wattis as Detective Inspector MacLeod |
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Margaret Halstan as Lady Marchant |
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Eileen Way as Mme. Fernande |
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Michael Ripper as Eddie |
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Betty Cooper as Miss Betty, Showroom Mistress |
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Thomas Heathcote as Detective Sgt. Jessup |
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Alan Rolfe as Inspector |
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Roger Delgado as Marlowe |
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Reed De Rouen as Heath |
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Delphi Lawrence as Chelsea |
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Christine Forrest as Blonde |
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Ann Hanslip as Jane, model with shoulder-length hair |
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Davy Leon as George |
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Dorothy Robson as A Seamstress |
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Leo Phillips as Harry, the Night Watchman |
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Robert Moore as Stevenson |
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Denis Cowles as Commissionaire |
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John H. Watson as Chauffeur |
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Cleo Rose as Vivian |
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Cab Kaye as Self - Singer-Pianist (uncredited) |
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John Lynn as Nightclub Patron (uncredited) |
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Jack Mandeville as Fashion Show Attendee (uncredited) |
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Ernie Priest as Policeman (uncredited) |
| Directing | Terence Fisher | Director |
| Sound | Ivor Slaney | Music Director |
| Costume & Make-Up | Molly Arbuthnot | Wardrobe Master |
| Production | Mickey Delamar | Production Manager |
| Sound | Molly Terraine | Dialogue Editor |
| Directing | Jimmy Sangster | Assistant Director |
| Camera | Len Harris | Camera Operator |
| Writing | Jan Read | Screenplay |
| Production | Michael Carreras | Producer |
| Camera | Walter J. Harvey | Director of Photography |
| Editing | Maurice Rootes | Editor |
| Art | J. Elder Wills | Art Direction |
| Costume & Make-Up | Ben Pearson | Costume Design |
| Directing | Renée Glynne | Script Supervisor |
| Costume & Make-Up | Nina Broe | Hairstylist |
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Sound | George Burgess | Sound Recordist |
| Sound | Bill Salter | Sound Recordist |
| Sound | Ivor Slaney | Original Music Composer |
