Warner Oland
Charlie Chan
William Demarest
Sergeant Kelly
Guy Usher
Inspector Regan
Margaret Irving
Mme. Lilli Rochelle
Gregory Gaye
Enrico Borelli
Nedda Harrigan
Mme. Lucretia Borelli
Charlotte Henry
Mlle. Kitty
Thomas Beck
Phil Childers
Tom McGuire
Pop Morris - Stage Doorman
Marc Lawrence
Undetermined Minor Role (uncredited) (unconfirmed)
Joan Woodbury
Dancer in Opera (uncredited)