- 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)
Capítulo disponible en las siguientes plataformas:
