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Wallace Campbell as Henry Blackstone |
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Kenneth Colley as Corbett |
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Hugh Cross as Chief Supt. Baldwin |
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David Dundas as Tony Lambert |
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George Innes as Bill Dobson |
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John Malcolm as Geoff Baines |
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Carmel McSharry as Mrs. Lambert |
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Daphne Oxenford as Sheila Bannister |
| Directing | Michael Apted | Director |
| Production | Harry V. Kershaw | Producer |
| Writing | Martin Worth | Writer |
