Dr. Mabuse has been locked away for years in an insane asylum. Suddenly crimes start occurring and no one knows the culprit. A detective goes to visit the Doctor to find some sort of clues to the robberies.
Kriminalkommissar Lohmann
Nelly
Jonny Briggs
Dr. Mabuse
Kriminalassistent Krüger
Mortimer
Flocke
Professor Pohland
Wackel-Heidi
Paragraphen-Joe
Rolf - Augapfel
Gulliver
Toni
Jack
Franky
Eddi
Box-Manager
Henry - Kurzschluß (uncredited)
