Riven

Warner Oland

as Charlie Chan

Boris Karloff

as Gravelle

Keye Luke

as Lee Chan

William Demarest

as Sergeant Kelly

Guy Usher

as Inspector Regan

Margaret Irving

as Mme. Lilli Rochelle

Gregory Gaye

as Enrico Borelli

Nedda Harrigan

as Mme. Lucretia Borelli

Frank Conroy

as Mr. Whitely

Charlotte Henry

as Mlle. Kitty

Thomas Beck

as Phil Childers

Maurice Cass

as Mr. Arnold

Tom McGuire

as Pop Morris - Stage Doorman

Marc Lawrence

as Undetermined Minor Role (uncredited) (unconfirmed)

Joan Woodbury

as Dancer in Opera (uncredited)

William Bailey

as Detective (uncredited)

Charles Bancroft

as Soldier in Opera (uncredited)

John Bleifer

as Murdered Orderly (uncredited)

Stanley Blystone

as Backstage Cop Who Shoots Gravelle (uncredited)

Myrta Bonillas

as Villager in Opera (uncredited)

Raymond Brown

as Guard (uncredited)

Carita Crawford

as Dancer in Opera (uncredited)

Patrick Cunning

as Villager in Opera (uncredited)

Zari Elmassian

as Mme. Rochelle (singing voice) (uncredited)

Frank Fanning

as Cop (uncredited)

Jim Farley

as Detective (uncredited)

Adolph Faylauer

as Opera Spectator (uncredited)

Larry Fisher

as Cop (uncredited)

Benson Fong

as Opera Supernumerary (uncredited)

J. C. Fowler

as Opera Spectator (uncredited)

Otto Fries

as Innkeeper (uncredited)

Bud Geary

as Cop (uncredited)

Milton Gowman

as Villager in Opera (uncredited)

Herschel Graham

as Villager in Opera (uncredited)

Harrison Greene

as Detective (uncredited)

Julia Griffith

as Opera Spectator (uncredited)

H. Bruce Humberstone

Director

Charles Belden

Writer

Earl Derr Biggers

Characters

Sol M. Wurtzel

Executive Producer

Oscar Levant

Music

Lucien N. Andriot

Director of Photography

Alex Troffey

Editor

Herschel McCoy

Costume Design