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Robert Stack as Bob Hayward |
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Barbara Britton as Alice Hayward |
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Nigel Bruce as Dr. Angus McLean |
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Ramsay Hill as Major Parkhurst |
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Paul McVey as Commissioner |
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Hope Miller as Portuguese girl |
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John Dodsworth as Sir William Drayton |
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Patrick O'Moore as Ballinger |
| Writing | Arch Oboler | Screenplay |
| Directing | Arch Oboler | Director |
| Editing | John Hoffman | Editor |
| Art | Robert Eaton | Props |