Normal the Düsseldorf Ripper

Between 1929 and 1931 Peter Kuerten brutally murdered eight people and attacked many others. He spread the same panic as Jack the Ripper once did in London. Now, this brutal sadist has voluntarily turned himself in to the police and a young ambitious lawyer, Justus Wehner, is assigned to defend him. Wehner is certain that Kuerten suffers from a severe mental disorder and decides to prove the killer insane. A battle of the minds between a righteous lawyer and an intelligent monster ensues. (official distributor synopsis)