Dr. Mabuse and his organization of criminals are in the process of completing their latest scheme, a theft of information that will allow Mabuse to make huge profits on the stock exchange. Afterwards, Mabuse disguises himself and attends the Folies Bergères show, where Cara Carozza, the main attraction of the show, passes him information on Mabuse's next intended victim, the young millionaire Edgar Hull. Mabuse then uses psychic manipulation to lure Hull into a card game where he loses heavily. When Police Commissioner von Wenk begins an investigation of this mysterious crime spree, he has little to go on, and he needs to find someone who can help him.
Rudolf Klein-Rogge
as Dr. Mabuse
Aud Egede-Nissen
as Cara Carozza
Gertrude Welcker
as Countess Dusy Told
Alfred Abel
as Count Told
Bernhard Goetzke
as Prosecutor von Wenk
Paul Richter
as Edgar Hull
Robert Forster-Larrinaga
as Spoerri
Hans Adalbert Schlettow
as Georg
Georg John
as Pesch
Károly Huszár
as Hawasch
Grete Berger
as Fine, a servant
Julius Falkenstein
as Karsten
