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| Cast |
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| Professor Henry Morlant | KARLOFF, Boris |
| Broughton | HARDWICKE, Cedric |
| Laing | THESIGER, Ernest |
| Betty Harlon | HYSON, Dorothy |
| Ralph Morlant | BUSHELL, Anthony |
| Nigel Hartley | RICHARDSON, Ralph |
| Kaney | HARRISON, Kathleen |
| Aga Ben Dragore | HUTH, Harold |
| Mahmoud | CLARKE-SMITH, D.A. |
| [chauffeur] | RAINE, Jack |
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| Credits |
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| Director | HUNTER, T. Hayes |
| Adaptation | DOWNING, Rupert |
| Art Director | JUNGE, Alfred |
| Editor | DALRYMPLE, Ian |
| Director of Photography | KRAMPF, Gunther |
| Production Personnel | MacPHAIL, Angus |
| Music | LEVY, Louis |
| Production Personnel | GUNN, George |
| Unit Manager | BOOTHBY, Geoffrey |
| [Producer] | BALCON, Michael |
| Screen Version | PERTWEE, Roland |
| Screen Version | TURNER, John Hastings |
| By | HINES, Leonard |
| By | KING, Frank |
| Production Company | Gaumont-British Picture Corporation |
| Editor | KEMPLEN, Ralph |
| Recordist | BIRCH, A.F. |
| Assistant Director | LYONS, R. |
| [Screenplay] | DuGARDE PEACH, L. |
| [Make-up] | HEITFELD, Heinrich |
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