Ethel Griffies
Mme. Saturnia, aka Lizzie
Henry Daniell
Watson King
Richard Derr
Carl Detheridge
Steven Geray
Dr. Retling
George Chandler
The Bus Driver
Lucien Littlefield
Prof. Gleason
Sidney Toler
Charlie Chan
Douglass Dumbrille
Paul Manderley
Victor Sen Yung
Jimmy Chan
Edmund MacDonald
Walter Hartford
Tex Phelps
(scene deleted)
Lenita Lane
Lucy Borgia Manderley
Arleen Whelan
Brenda Hartford
Milton Parsons
Arthur Fletcher
Oliver Blake
The Hotel Manager
Paul Kruger
(unconfirmed)