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Stephen Boyd as Peter Jongman |
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Dolores Hart as Lisa Held |
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Leo McKern as Brandt |
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Hugh Griffith as Van der Pink |
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Donald Pleasence as Wolters |
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Harry Andrews as Ayoob |
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Robert Stephens as Dickens |
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Marius Goring as Thorens |
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Finlay Currie as De Kool |
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Geoffrey Keen as Bartels |
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Neil McCallum as Browne |
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Jean Anderson as Mrs. Jongman |
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Jane Jordan Rogers as Anaka Jongman |
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Jack Gwillim as Inspector Cobb |
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Arthur Gross as Railway Conductor |
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Anne Dickins as Rachel |
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Vi Stevens as Barge Woman |
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Derek Francis as Detective Inspector |
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Victor Brooks as Sergeant Groninger |
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Geoffrey Frederick as Soldier |
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Clifford Elkin as Signaller |
| Directing | Philip Dunne | Director |
| Writing | Jan de Hartog | Novel |
| Art | Elliot Scott | Art Direction |
| Directing | Charles Blair | Second Assistant Director |
| Sound | Malcolm Arnold | Original Music Composer |
| Sound | Malcolm Arnold | Conductor |
| Editing | Ernest Walter | Editor |
| Production | David Middlemas | Production Manager |
| Camera | Paul Wilson | Camera Operator |
| Directing | Kip Gowans | Assistant Director |
| Sound | Roy Baker | Sound Editor |
| Sound | A.W. Watkins | Sound Supervisor |
| Sound | Gerry Turner | Sound Recordist |
| Sound | J.B. Smith | Sound Recordist |
| Costume & Make-Up | John O'Gorman | Makeup Artist |
| Costume & Make-Up | Wally Schneiderman | Makeup Artist |
| Costume & Make-Up | Joan Smallwood | Hairdresser |
| Directing | Elaine Schreyeck | Continuity |
| Production | Nora Roberts | Casting Director |
| Writing | Nelson Gidding | Screenplay |
| Camera | Arthur Ibbetson | Director of Photography |
| Production | Mark Robson | Executive Producer |
