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Дэна Эндрюс as Igor Gouzenko |
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Джин Тирни as Anna Gouzenko |
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June Havoc as Nina Karanova |
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Berry Kroeger as John Grubb, aka 'Paul' |
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Edna Best as Mrs. Albert Foster |
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Stefan Schnabel as Col. Ilya Ranov |
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Nicholas Joy as Dr. Harold Preston Norman, aka 'Alec' |
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Eduard Franz as Maj. Semyon Kulin |
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Frederic Tozere as Col. Aleksandr Trigorin (as Frederic Tozère) |
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Christopher Olsen as Andrei Gouzenko |
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Noel Cravat as |
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Anne Curson as |
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Helena Dare as |
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John Davidson as |
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Michael Dugan as |
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Reed Hadley as Narrator (voice) |
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Mauritz Hugo as |
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John Ridgely as |
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John Shay as |
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Brick Sullivan as |
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Ken Terrell as |
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Joe Whitehead as |
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Peter Whitney as |
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Victor Wood as |
| Directing | William A. Wellman | Director |
| Writing | Igor Gouzenko | Writer |
| Costume & Make-Up | Bonnie Cashin | Costume Design |
| Editing | Louis R. Loeffler | Editor |
| Art | Mark-Lee Kirk | Art Direction |
| Art | Thomas Little | Set Decoration |
| Production | Sol C. Siegel | Producer |
| Camera | Charles G. Clarke | Director of Photography |
| Art | Lyle R. Wheeler | Art Direction |
| Costume & Make-Up | Ben Nye | Makeup Artist |
| Camera | Frank Serjack | Still Photographer |
| Writing | Milton Krims | Screenplay |
| Crew | Darryl F. Zanuck | Presenter |
