Fabian Seifert lies dead in his Köpenick apartment. He had exploited a gray area in the law and legally distributed an LSD derivative. Was his business idea fatal to him?

On a remote site in Köpenick, a judge is found dead hanging from a bridge. The pathologist quickly rules out a suicide. Investigations revealed that the site was not the scene of the crime and that the victim drowned. Freund and Heffler are not only looking for a murderer, but also for the reason why Thomas Eichler was pilloried after the murder.

The young mother Nihal Alev is found dead in the Spree tunnel in Köpenick. A brutal murder: the woman was choked after she was dead. Who had such hatred for the victim?

A dead man in the Spree. The man was drugged, beaten to death and thrown into the water. He had worked in a trucking company and found his love. Did he also meet his murderer here?