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Memo Benassi as John Brown, il detective |
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Leda Gloria as Anna |
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Giuditta Rissone as Alice |
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Ninì Dinelli as Clara |
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Lamberto Picasso as Fersen |
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Ernesto Sabbatini as Ammiraglio Morstan |
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Mino Doro as Carlo |
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Fosco Giachetti as Raythan |
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Alexandre Mihalesco as Jackie |
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Oreste Fares as Mister Baskerville |
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Giovanni Ferrari as Un autista |
| Directing | Mario Bonnard | Director |
| Writing | Mario Bonnard | Screenplay |
| Production | Mario Bonnard | Producer |
| Editing | Mario Bonnard | Editor |
| Sound | Giulio Bonnard | Music |
| Art | Gastone Medin | Production Design |
| Camera | Carlo Montuori | Director of Photography |
