The Florentine Dagger

Juan Cesare

Donald Woods

Florence Ballau

Margaret Lindsay

Gerard Lytton

C. Aubrey Smith

Victor Ballau

Henry O'Neill

Inspector Von Brinkner

Robert Barrat

Teresa

Florence Fair

Von Stein

Frank Reicher

Salvatore

Charles Judels

Lili Salvatore

Rafaela Ottiano

Antonio

Paul Porcasi

Fredericka

Eily Malyon

Karl

Egon Brecher

Baker

Herman Bing

Auctioneer

Henry Kolker

Eric (uncredited)

Barlowe Borland

Detective (uncredited)

Glen Cavender

Servant (uncredited)

Wheaton Chambers

Conductor (uncredited)

Carlos De Valdez

Apothecary (uncredited)

Charles Fallon

Frieda (uncredited)

Betty Farrington

Scotland Yard Radio Operator (uncredited)

Olaf Hytten

Policeman Schultz (uncredited)

William Irving

Man in Front Row (archive footage)

Charles Lane

Bidder at Auction (uncredited)

Eric Mayne

Fishback (uncredited)

William V. Mong

Rodrigo (uncredited)

David Newell

Detective (uncredited)

Paul Panzer

First Taxi Driver (uncredited)

Russ Powell

Pasquale (uncredited)

Adrian Rosley

Policeman Otto (uncredited)

Ferdinand Schumann-Heink

Baker's Daughter (uncredited)

Louise Seidel

Fraulein von Elsner (uncredited)

Ruthelma Stevens

Romberg (uncredited)

Frederick Sullivan

Heinrich (uncredited)

Bernard Suss

(uncredited)

Frank Thornton

Bidder (uncredited)

Anders Van Haden

Coroner (uncredited)

William Wagner