Detective James Lee Wong must find the "Eye of the Daughter of the Moon," a priceless but cursed sapphire stolen in China and smuggled to America. His search takes him into the heart of Chinatown and to the dreaded "House of Hate" to find the deadly gem before it can kill again.
| Actor | Role |
|---|---|
 Boris KarloffJames Lee Wong | James Lee Wong |
 Grant WithersPolice Capt. Sam Street | Police Capt. Sam Street |
 Dorothy TreeValerie Edwards | Valerie Edwards |
 Craig ReynoldsPeter Harrison | Peter Harrison |
 Ivan LebedeffMichael Strogonoff | Michael Strogonoff |
 Holmes HerbertProf. Ed Janney | Prof. Ed Janney |
 Morgan WallaceBrandon Edwards | Brandon Edwards |
| LLotus LongDrina | Drina |
 Chester GanSing | Sing |
 Hooper AtchleyCarslake | Carslake |
| BBruce WongAsian Man | Asian Man |
| JJack KennedyPolice Guard | Police Guard |
 Lee Tung FooWillie | Willie |
 Wilbur MackBallstics Expert | Ballstics Expert |
| DDick MoreheadPolice Detective | Police Detective |
 Joe DevlinPolice Lt. George Devlin | Police Lt. George Devlin |
 I. Stanford JolleyCharades-Player | Charades-Player |