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.
Warner Oland
as Charlie Chan
Keye Luke
as Lee Chan
Jon Hall
as Philip Nash
Irene Hervey
as Diana Woodland
Russell Hicks
as James Andrews
Frederick Vogeding
as Ivan Marloff
Halliwell Hobbes
as Colonel Watkins, police commissioner
Neil Fitzgerald
as Dakin - Colonel Watkins' Aide
Max Wagner
as Taxi Driver Henchman
Colin Kenny
as Reporter
Torben Meyer
as French Diplomat
Joan Woodbury
as Dancer in Versailles Cafe (uncredited)
