Brandt is not at all pleased that Wiesel has been honored for his police work. As a silly argument breaks out between the two investigators, Köster and Seidenpfennig take over. Because a new case requires the utmost professionalism: The universally unpopular Volker Pinkwardt lies dead in his apartment with a head wound. A tragic accident or murder? More and more suspects and questions emerge. And then there's the question of why Wiesel has been behaving so strangely lately, regardless of his quarrel with Brandt?