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