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Dennis Price as Martin Radley |
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Renée Asherson as Barbara Everton |
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Patrick Barr as John Everton |
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Duncan Lamont as Charles Wayne |
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Susan Shaw as Evelyn Gower |
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Bonar Colleano as Roommate |
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Alfie Bass as Ernie Gordon |
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Agnes Lauchlan as Laura Westcott |
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Brenda Hogan as Diana |
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Barbara Graley as Betty |
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Mavis Villiers as Gladys |
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William Franklyn as Sgt. Peter Thompson |
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Dandy Nichols as Charwoman |
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Erik Chitty as Ballistics Expert |
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Howard Layton as Surgeon |
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Nigel Neilson as Hubert |
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Alastair Hunter as Bookmaker |
| Writing | Allan MacKinnon | Writer |
| Directing | Don Chaffey | Director |
| Editing | Sam Simmonds | Editor |
| Crew | Geoffrey Faithfull | Cinematography |
| Production | Roger Proudlock | Producer |
| Production | David Birtwistle | Producer |
| Writing | Ella Adkins | Theatre Play |
