Charlie Chan
Sidney Toler
Jimmy Chan
Victor Sen Yung
Prof. Gleason
Lucien Littlefield
Arthur Fletcher
Milton Parsons
The Bus Driver
George Chandler
The Hotel Manager
Oliver Blake
The Majordomo
Eric Wilton
(unconfirmed)
Paul Kruger
(scene deleted)
Tex Phelps
Lucy Borgia Manderley
Lenita Lane
Paul Manderley
Douglass Dumbrille
Dr. Retling
Steven Geray
Walter Hartford
Edmund MacDonald
Brenda Hartford
Arleen Whelan
Mme. Saturnia, aka Lizzie
Ethel Griffies
Watson King
Henry Daniell
Carl Detheridge
Richard Derr
Director of Photography
Virgil Miller
Director
Harry Lachman
Art Direction
Richard Day
Lewis H. Creber
Sound
Harry M. Leonard
Editor
John Brady
Production Manager
William Koenig
Producer
Ralph Dietrich
Costume Design
Herschel McCoy
Bernard Freericks
Set Decoration
Thomas Little
Characters
Earl Derr Biggers
Screenplay
John Francis Larkin