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Theodore Roberts as Mr. Grex, alias of Grand Duke Augustus Peter |
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Dorothy Davenport as Grand Duchess Feodora |
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Carlyle Blackwell as Richard Lane |
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James Neill as Herr Selingman |
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Horace B. Carpenter as Mons. Pitou |
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Frank Elliott as Lord Huntersley |
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John McDermott as Ernest |
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Robert Gray as David |
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Gertrude Kellar as Lady Wibourn |
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Lucien Littlefield as The Rag Picker |
| Directing | Frank Reicher | Director |
| Writing | Marion Fairfax | Scenario Writer |
| Writing | E. Phillips Oppenheim | Novel |
