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Harald Leipnitz as Inspektor Craig |
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Klaus Kinski as Dave Emerson / Richard Emerson |
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Carl Lange as Dr. Albert Mangrove |
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Ilse Steppat as Lady Emerson |
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Hermann Lenschau as Rechtsanwalt Douglas |
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Diana Körner as Myrna Emerson |
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Gudrun Genest as Schwester Harris |
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Albert Bessler as Butler Anthony |
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Richard Haller as Edward Appleton / Die Blaue Hand |
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Ilse Pagé as Miss Mabel Finley |
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Fred Haltiner as Wärter Reynolds |
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Peter Parten as Robert Emerson |
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Thomas Danneberg as Charles Emerson |
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Heinz Spitzner as Richter |
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Siegfried Schürenberg as Sir John |
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Harry Riebauer as |
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Heinrich Gies as |
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Karin Kenklies as |
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Uschi Mood as |
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Günther Notthoff as |
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Otto Czarski as |
| Directing | Alfred Vohrer | Director |
| Writing | Herbert Reinecker | Screenplay |
| Writing | Edgar Wallace | Novel |
| Camera | Ernst W. Kalinke | Director of Photography |
| Production | Horst Wendlandt | Producer |
| Sound | Martin Böttcher | Music |
| Editing | Jutta Hering | Editor |
