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Franklin Dyall as Dr Jose Manuel |
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Lester Matthews as Gilbert Vaughan |
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Alexander Sarner as Santos Macari |
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Dorothy Boyd as Pauline March |
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Francis L. Sullivan as Kaledin |
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Anthony Ireland as Anthony March |
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Ian Fleming as Dr Carter |
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Margaret Emden as Priscilla |
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Geoffrey Goodhart as Ivan |
| Directing | Reginald Denham | Director |
| Production | Julius Hagen | Producer |
| Writing | Hugh Conway | Novel |
| Writing | Hugh Conway | Screenplay |
| Directing | Jack Harris | Director |
