Max Liebermann

 is a doctor studying neurology and psychonalaysis under tutelage of Sigmund Freud. He observes Detective Oskar Rheinhardt in Vienna's cases to understand the criminal mind.

Biography
Max is a middle-class British-Jew who moved to Austria in his adolescent years. Max is now a junior doctor but has fallen under the spell of the new science of the day and is studying neurology. Fixated by the idea of analyzing psychopaths at close hand, Max convinces the Viennese police to let him observe their work.