Charlie Chan

Warner Oland

Acting

Gravelle

Boris Karloff

Acting

Lee Chan

Keye Luke

Acting

Sergeant Kelly

William Demarest

Acting

Inspector Regan

Guy Usher

Acting

Mme. Lilli Rochelle

Margaret Irving

Acting

Enrico Borelli

Gregory Gaye

Acting

Mme. Lucretia Borelli

Nedda Harrigan

Acting

Mr. Whitely

Frank Conroy

Acting

Mlle. Kitty

Charlotte Henry

Acting

Phil Childers

Thomas Beck

Acting

Mr. Arnold

Maurice Cass

Acting

Pop Morris - Stage Doorman

Tom McGuire

Acting

Undetermined Minor Role (uncredited) (unconfirmed)

Marc Lawrence

Acting

Dancer in Opera (uncredited)

Joan Woodbury

Acting

Detective (uncredited)

William Bailey

Acting

Soldier in Opera (uncredited)

Charles Bancroft

Acting

Murdered Orderly (uncredited)

John Bleifer

Acting

Backstage Cop Who Shoots Gravelle (uncredited)

Stanley Blystone

Acting

Villager in Opera (uncredited)

Myrta Bonillas

Acting

Guard (uncredited)

Raymond Brown

Acting

Dancer in Opera (uncredited)

Carita Crawford

Acting

Villager in Opera (uncredited)

Patrick Cunning

Acting

Mme. Rochelle (singing voice) (uncredited)

Zari Elmassian

Acting

Cop (uncredited)

Frank Fanning

Acting

Detective (uncredited)

Jim Farley

Acting

Opera Spectator (uncredited)

Adolph Faylauer

Acting

Cop (uncredited)

Larry Fisher

Acting

Opera Supernumerary (uncredited)

Benson Fong

Acting

Opera Spectator (uncredited)

J. C. Fowler

Acting

Innkeeper (uncredited)

Otto Fries

Acting

Cop (uncredited)

Bud Geary

Acting

Villager in Opera (uncredited)

Milton Gowman

Acting

Villager in Opera (uncredited)

Herschel Graham

Acting

Detective (uncredited)

Harrison Greene

Acting

Opera Spectator (uncredited)

Julia Griffith

Acting