Donald Woods (28)

Juan Cesare

Margaret Lindsay (24)

Florence Ballau

C. Aubrey Smith (71)

Gerard Lytton

Henry O'Neill (43)

Victor Ballau

Robert Barrat (45)

Inspector Von Brinkner

Florence Fair (27)

Teresa

Frank Reicher (59)

Von Stein

Charles Judels (52)

Salvatore

Rafaela Ottiano (47)

Lili Salvatore

Paul Porcasi (56)

Antonio

Eily Malyon (55)

Fredericka

Egon Brecher (55)

Karl

Herman Bing (46)

Baker

Henry Kolker (60)

Auctioneer

Barlowe Borland (57)

Eric (uncredited)

Glen Cavender (51)

Detective (uncredited)

Wheaton Chambers (47)

Servant (uncredited)

Carlos De Valdez (41)

Conductor (uncredited)

Charles Fallon

Apothecary (uncredited)

Betty Farrington (36)

Frieda (uncredited)

Olaf Hytten (47)

Scotland Yard Radio Operator (uncredited)

William Irving (41)

Policeman Schultz (uncredited)

Charles Lane (30)

Man in Front Row (archive footage)

Eric Mayne (69)

Bidder at Auction (uncredited)

William V. Mong (59)

Fishback (uncredited)

David Newell (30)

Rodrigo (uncredited)

Paul Panzer (62)

Detective (uncredited)

Russ Powell (59)

First Taxi Driver (uncredited)

Adrian Rosley (47)

Pasquale (uncredited)

Ferdinand Schumann-Heink (41)

Policeman Otto (uncredited)