Anna Janneke (Margarita Broich) and Paul Brix (Wolfram Koch), chief inspectors in Frankfurt, are called to a gruesome find: body parts wrapped in plastic bags. It quickly turns out that the victim comes from Kassel. It's 17-year-old Luke Rohde, stepson of the nation's sunny boy, popular television talk show host Maarten Jansen (Barry Atsma). Jansen had led an idyllic family life with his wife Kirsten (Stephanie Eidt) and their two sons from their first marriage. Janneke and Brix are puzzled as to why Luke was the victim. To inquire about the status of the investigation, Maarten Jansen comes to the Kassel police headquarters. But inIn a conversation with Anna Janneke, more and more contradictions emerge. The two Frankfurt detectives realize that only Maarten can be the murderer of his stepson. A grueling interrogation begins.
Directed by Umut Dag, "The Monster of Kassel" takes the two Frankfurt investigators Anna Janneke and Paul Brix to Kassel in northern Hesse this time. In addition to Margarita Broich and Wolfram Koch, other leading roles include Barry Atsma, Christina Große, Stephanie Eidt, Justus Johanssen, Sofie Eifertinger, Anabel Möbius, Bruno Cathomas, Zazie de Paris, Isaak Dentler and many others. Stephan Brüggenthies wrote the book for this HR "crime scene".