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Holmes Herbert as Sir Percy Blakeney |
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Pedro de Cordoba as Paul Déroulède |
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Flora le Breton as Juliette de Marny |
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Georges Tréville as Duc de Marny |
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Marquisette Bosky as Anne Mie |
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Lewis Gilbert as Merlin |
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A.B. Imeson as Tinville |
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Ivan Samson as Vicomte de Marny |
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Robert Lang as Villefranche |
| Directing | Henry Kolker | Director |
| Writing | Isabel Johnston | Scenario Writer |
| Writing | Baroness Emmuska Orczy | Novel |
| Writing | Kinchen Wood | Scenario Writer |
| Crew | J. Rosenthal Jr. | Cinematography |
