| Actor | Role |
|---|---|
 Esther RalstonDiana Mallory | Diana Mallory |
 Neil HamiltonRoderick Keswick | Roderick Keswick |
 Sôjin KamiyamaChang-Tzo | Chang-Tzo |
 Charles SellonPerkins | Perkins |
 Roscoe KarnsGeorge | George |
 Lawrence GrantThe Earl of Rochester | The Earl of Rochester |
 Mischa AuerClark | Clark |
 Noble JohnsonThe Thing | The Thing |
 Vera LewisGräfin Agathe | Gräfin Agathe |
| GGeorge Y. HarveyScotland Yard Inspector | Scotland Yard Inspector |
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