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Jeffrey Hunter as Captain Bill Ranson |
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Annemarie Düringer as Rolande Hertog |
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Nigel Patrick as Major Julien Howard |
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David Kossoff as Dr. Mulder |
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Rolf Lefebvre as Hans Faber, chief spy |
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Larry Burns as Martins, building porter-spy |
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Anthony Ostrer as |
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Claude Kingston as Willem Mulder |
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Robert Raglan as Lt. Miller |
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Peter Prouse as Sgt. Bill Parrish |
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Philip Bond as Piet van Wijt |
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Otto Diamant as Mr. Hendrijk |
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Marianne Walla as Mrs. Hendrijk |
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Beth Rogan as Mary Ann Lennig |
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Arthur Gross as Jan Guldt |
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Wolf Frees as Brauner, shot spy |
| Directing | Victor Vicas | Director |
| Writing | Barry Wynne | Novel |
| Writing | Jack Seddon | Writer |
| Writing | David Pursall | Writer |
