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Dennis Price as Inspector Peter Lawton |
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Peggy Evans as Joan Lawton |
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Rex Garner as Sgt. Bill Todd |
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Philip Saville as Edward "Teddy" King / Jim King |
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Greta Mayaro as Lena |
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Arnold Bell as McMann |
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Leonard Sharp as Old Skip |
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Nora Gordon as Nanna |
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Renee Goddard as Lady Branstead |
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Arthur Lovegrove as Inspector Cobb |
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Daphne Maddox as Victim |
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Robert Weeden as Constable |
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Eddie Boyce as Police Constable (uncredited) |
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John Davis as Transmitting Constable (uncredited) |
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Victor Harrington as Jewel Box Nightclub Patron (uncredited) |
| Crew | Moie Charles | Additional Dialogue |
| Writing | John Ainsworth | Screenplay |
| Directing | Francis Searle | Director |
| Production | David Henley | Producer |
| Production | John 'Pinky' Green | Production Manager |
| Production | John Ainsworth | Producer |
| Editing | Adam Dawson | Editor |
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Camera | S.D. Onions | Director of Photography |
| Art | George Paterson | Art Direction |
| Costume & Make-Up | Kathleen Moore | Wardrobe Assistant |
| Sound | Eric Spear | Original Music Composer |
| Camera | Ken Nicholson | Focus Puller |
| Camera | Anthony Busbridge | Clapper Loader |
| Directing | John Oldknow | Assistant Director |
| Directing | Douglas Hickox | Second Assistant Director |
| Sound | Derick McColm | Sound |
| Sound | Eric Spear | Conductor |
| Editing | Terry Laurie | Assistant Editor |
| Directing | Gladys Reeve | Continuity |
| Sound | William Germain | Sound |
| Sound | Don Wortham | Boom Operator |
| Camera | Bill Oxley | Camera Operator |
