Private detective Donegal Dawn is summoned by the police commissioner to solve the reasons for a crime wave in Chinatown.
| Actor | Role |
|---|---|
 Nick StuartRobert Rand | Robert Rand |
 Lucile BrowneZenobia | Zenobia |
| RRaymond LawrenceDonegal Dawn | Donegal Dawn |
 James FlavinBrandhma | Brandhma |
| HHarry HewitsonChan Tow Ling | Chan Tow Ling |
| JJames McGrathCommissioner | Commissioner |
| RReginald HincksDr. Franklin | Dr. Franklin |
| JJohn BarnardDoverscourt | Doverscourt |
| AArthur Legge-WillisYogi of Madrada | Yogi of Madrada |