A girl was found dead on the lakeshore and they found an unusually large plastic bag. Another clue is a mysterious blue rabbit hair, which Michael Naseband and Alexandra Rietz puzzles with their new colleagues.

Crime scene bedroom! A dead woman lies half-naked, blindfolded, tied up and strangled on a bed. Flowers and cut hair suggest a serial killer. But then the investigators Alexandra Rietz and Michael Naseband run out of time, because the perpetrator wants to strike again ...

A hostage-taker has holed up in K11. In order to save the life of the seriously injured hostage, Chief Inspector Alexandra Rietz can be exchanged. Then a race against time begins! The investigators only have one hour to comply with the hostage taker's request, otherwise their colleague will die ...

The inspectors Alexandra Rietz and Michael Naseband are called to the station district. A seriously injured 17-year-old was found wearing only his underpants in a backyard. It quickly becomes clear that the boy is a victim of bullying who is harassed by his classmates because of his virginity. But then a new trail leads into the red light district ...

A corpse, charred beyond recognition, is found in the oven of a bakery. The identification of the victim is hardly possible anymore and the commissioners Michael Naseband and Alexandra Rietz investigate in every direction. But the victim apparently took his dark secret with him to the grave ...