All Cast
Warner Oland
Charlie Chan
Rosina Lawrence
Alice Lowell
Charles Quigley
Dick Williams
Henrietta Crosman
Mrs. Henrietta Lowell
Edward Trevor
Fred Gage
Astrid Allwyn
Janice Lowell Gage
Herbert Mundin
Baxter
Egon Brecher
Ulrich
Gloria Roy
Madame Carlotta Bowen
Ivan Miller
Morton of Homicide
Arthur Edmund Carewe
Professor Bowen
Jonathan Hale
Warren T. Phelps
Jerry Miley
Allen Colby
William Bailey
Det. Harris
Francis Ford
Captain of salvage ship
Bud Geary
Policeman
Chuck Hamilton
Policeman
Brick Sullivan
Policeman
James T. Mack
Fingerprint man
