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