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
CinemaSerf
So "Charlie" (Warner Oland) is to be the guest of honour at a grand banquet. That's all going fine until a prominent British diplomat "Sir Stanley" (David Torrence) finds that his planned gift to our honourable detective is quite lethal... Together with No. 1 son "Lee" (Keye Luke) they must discover...