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Harold Huth as Mark McGill |
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Carol Goodner as Ann Perryman |
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Edward Chapman as Sedeman |
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Campbell Gullan as Tiser |
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Henry Wilcoxon as Inspector Bradley |
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Abraham Sofaer as Li Yoseph |
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Joe Cunningham as Simmonds |
| Writing | Edgar Wallace | Novel |
| Sound | Harold V. King | Sound |
| Writing | Bryan Edgar Wallace | Writer |
| Art | Norman G. Arnold | Production Design |
| Directing | F. W. Kraemer | Director |
| Production | S.W. Smith | Producer |
