🍿FilmFellow

Boris Karloff

Gravelle

Marc Lawrence

Undetermined Minor Role (uncredited) (unconfirmed)

Warner Oland

Charlie Chan

Jim Farley

Detective (uncredited)

Frank Conroy

Mr. Whitely

Keye Luke

Lee Chan

Gregory Gaye

Enrico Borelli

William Demarest

Sergeant Kelly

Stanley Blystone

Backstage Cop Who Shoots Gravelle (uncredited)

Guy Usher

Inspector Regan

Bud Geary

Cop (uncredited)

Joan Woodbury

Dancer in Opera (uncredited)

Benson Fong

Opera Supernumerary (uncredited)

Charlotte Henry

Mlle. Kitty

Margaret Irving

Mme. Lilli Rochelle

John Bleifer

Murdered Orderly (uncredited)

Otto Fries

Innkeeper (uncredited)

William Bailey

Detective (uncredited)

Thomas Beck

Phil Childers

Nedda Harrigan

Mme. Lucretia Borelli

Maurice Cass

Mr. Arnold

Tom McGuire

Pop Morris - Stage Doorman

Harrison Greene

Detective (uncredited)

Adolph Faylauer

Opera Spectator (uncredited)

Raymond Brown

Guard (uncredited)

Larry Fisher

Cop (uncredited)

Julia Griffith

Opera Spectator (uncredited)

Myrta Bonillas

Villager in Opera (uncredited)

Patrick Cunning

Villager in Opera (uncredited)

J. C. Fowler

Opera Spectator (uncredited)

Frank Fanning

Cop (uncredited)

Herschel Graham

Villager in Opera (uncredited)

Zari Elmassian

Mme. Rochelle (singing voice) (uncredited)

Charles Bancroft

Soldier in Opera (uncredited)

Carita Crawford

Dancer in Opera (uncredited)

Milton Gowman

Villager in Opera (uncredited)