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Lloyd Bridges as Frank Prior |
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Moira Lister as Pauline French |
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Alan Wheatley as Inspector Braddock |
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Leslie Phillips as Detective Cameron |
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Hélène Cordet as Helene Castle |
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Tom Gill as Stage Manager |
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Bruce Beeby as Kendall Brown |
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Rachel Roberts as Barmaid |
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Marjory Hume as Landlady |
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Jean Marsh as Landlady's Daughter |
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Robert Harrin as The Magician |
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André van Gyseghem as George, Stage Doorman |
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Lionel Blair as The Dancer |
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Robert Harbin as The Magician |
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Charles Botterill as The Xylophonist |
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Verne Morgan as Stone |
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Raymond Rollett as Jonas |
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Irissa Cooper as The Maid |
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Maxwell Gardner as Airport Official |
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Jon Evans as Police Scientist |
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Olive Lucius as TV Hostess |
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Max Boisot as The Child |
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Louise Cordet as The Child |
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Paul Beradi as Party Guest (Uncredited) |
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Stephen Boyd as Airport Traveller (Uncredited) |
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Richard Neller as Party Guest (Uncredited) |
| Art | Cedric Dawe | Art Direction |
| Directing | Douglas Hickox | Second Assistant Director |
| Costume & Make-Up | Pearl Tipaldi | Hairdresser |
| Costume & Make-Up | Peter Evans | Makeup Artist |
| Production | Elsa Hatchett | Production Manager |
| Directing | John Pitcher | Third Assistant Director |
| Camera | Dennis Reed | Still Photographer |
| Sound | Dave Drinkwater | Boom Operator |
| Camera | Ron Robson | Camera Operator |
| Sound | Eric Robinson | Music Director |
| Art | Jack Stevens | Assistant Art Director |
| Camera | Manny Yospa | Focus Puller |
| Directing | Pat Kelly | Assistant Director |
| Costume & Make-Up | Jenny Benson | Costume Design |
| Camera | Alec Mills | Clapper Loader |
| Camera | Michael Scott | Still Photographer |
| Sound | Paul Lecker | Boom Operator |
| Sound | Kevin Sutton | Boom Operator |
| Writing | Ian Stuart Black | Screenplay |
| Directing | Cy Endfield | Director |
| Writing | Reginald Long | Screenplay |
| Writing | Anthony Verney | Story |
| Production | Donald Ginsberg | Producer |
| Sound | Arthur Wilkinson | Original Music Composer |
| Directing | Gladys Reeve | Continuity |
| Editing | Stanley Willis | Editor |
| Camera | Jonah Jones | Director of Photography |
| Art | Fred Mannin | Draughtsman |
