High school graduate Fee is kidnapped. But after two days, her cell door suddenly opens. Her kidnapper, Lichtenberg repeat offender Dettloff, is dead - he was murdered.

21-year-old Mike Schwarz is found dead in the Krüger family's pool on his birthday: he was drowned.

Patrol colleagues Carlotta Heffler and Tom Landwehr are called to a disturbance; loud music is coming from the Köpenick Rowing Club. The two of them are presented with a gruesome sight.