A desperate call alerted the Kiel police emergency number: "He's in my apartment. He just comes through the wall." But for Carmen Kessler, any help comes too late. The young woman is found brutally murdered in her apartment.

A confused woman is found on the Kiel Fjord. Her statements give reason to fear that the notorious murderer of women, Kai Korthals, has reappeared. Inspector Brandt informs her colleague Borowski about the serial killer, with whom she once had traumatic experiences. Borowski finds the new case highly inconvenient. He's in love and wants to get married. But when his bride disappears without a trace, he has to ask himself whether the murderer has returned because of him.

Alarm in Kiel: In an uprising in the forensic clinic, the woman killer Kai Korthals manages to escape from security custody. Korthals, who crept and killed numerous women in their homes, became Borowski's personal nightmare six years ago when he kidnapped his fiancée Frieda Jung.