When a prominent official is murdered at a banquet honoring Charle Chan, the detective and son Lee team up to expose an opium-smuggling ring.
| Actor | Role |
|---|---|
 Warner OlandCharlie Chan | Charlie Chan |
 Keye LukeLee Chan | Lee Chan |
 Jon HallPhilip Nash | Philip Nash |
 Irene HerveyDiana Woodland | Diana Woodland |
 Russell HicksJames Andrews | James Andrews |
 Frederick VogedingIvan Marloff | Ivan Marloff |
 Halliwell HobbesColonel Watkins, police commissioner | Colonel Watkins, police commissioner |
| NNeil FitzgeraldDakin - Colonel Watkins' Aide | Dakin - Colonel Watkins' Aide |
 Max WagnerTaxi Driver Henchman | Taxi Driver Henchman |
 Colin KennyReporter | Reporter |
 Torben MeyerFrench Diplomat | French Diplomat |
 Joan WoodburyDancer in Versailles Cafe (uncredited) | Dancer in Versailles Cafe (uncredited) |
 Harry StrangChauffeur | Chauffeur |