Charlie Chan at the Opera - 6.6★

Warner Oland - Charlie Chan

Boris Karloff - Gravelle

Keye Luke - Lee Chan

William Demarest - Sergeant Kelly

Guy Usher - Inspector Regan

Margaret Irving - Mme. Lilli Rochelle

Gregory Gaye - Enrico Borelli

Nedda Harrigan - Mme. Lucretia Borelli

Frank Conroy - Mr. Whitely

Charlotte Henry - Mlle. Kitty

Thomas Beck - Phil Childers

Maurice Cass - Mr. Arnold

Tom McGuire - Pop Morris - Stage Doorman

Marc Lawrence - Undetermined Minor Role (uncredited) (unconfirmed)

Joan Woodbury - Dancer in Opera (uncredited)