Donald Woods

Juan Cesare

Margaret Lindsay

Florence Ballau

C. Aubrey Smith

Gerard Lytton

Henry O'Neill

Victor Ballau

Robert Barrat

Inspector Von Brinkner

Florence Fair

Teresa

Frank Reicher

Von Stein

Charles Judels

Salvatore

Rafaela Ottiano

Lili Salvatore

Paul Porcasi

Antonio

Eily Malyon

Fredericka

Egon Brecher

Karl

Herman Bing

Baker

Henry Kolker

Auctioneer

Barlowe Borland

Eric (uncredited)

Glen Cavender

Detective (uncredited)

Wheaton Chambers

Servant (uncredited)

Carlos De Valdez

Conductor (uncredited)

Charles Fallon

Apothecary (uncredited)

Betty Farrington

Frieda (uncredited)

Olaf Hytten

Scotland Yard Radio Operator (uncredited)

William Irving

Policeman Schultz (uncredited)

Charles Lane

Man in Front Row (archive footage)

Eric Mayne

Bidder at Auction (uncredited)

William V. Mong

Fishback (uncredited)

David Newell

Rodrigo (uncredited)

Paul Panzer

Detective (uncredited)

Russ Powell

First Taxi Driver (uncredited)

Adrian Rosley

Pasquale (uncredited)

Ferdinand Schumann-Heink

Policeman Otto (uncredited)

Louise Seidel

Baker's Daughter (uncredited)

Ruthelma Stevens

Fraulein von Elsner (uncredited)

Frederick Sullivan

Romberg (uncredited)

Bernard Suss

Heinrich (uncredited)

Frank Thornton

(uncredited)

Anders Van Haden

Bidder (uncredited)

William Wagner

Coroner (uncredited)

Robert Florey

Director

Tom Reed

Guión

Ben Hecht

Guión

Brown Holmes

Guión

Tom Reed

Guión Adaptado

Arthur Greville Collins

Dialogue

Arthur L. Todd

Director de Fotografía

Bernhard Kaun

Compositor de la Música Original

Leo F. Forbstein

Music Director

Warner Brothers

Compañía de Produccion

Orry-Kelly

Costume Designer

Thomas Pratt

Editor

Carl Jules Weyl

Dirección Artística

Anton Grot

Dirección Artística

Brown Holmes

Additional Dialogue