Klein-Rogge in the role of Dr. Mabuse
With whitened hair, beaked nose, and an altogether sickly appearance, Rudolf reprises his greatest role in this talkie sequel to the original two-part film. This film, along with Fritz Lang's other, more controversial film, "M", was banned in Nazi Germany and would not be premiered until years afterward.
An interesting note is that the American version, "Crimes of Dr. Mabuse", would be the only instance where Rudy's dialogue was dubbed into English. And a fairly good voice it was at that.