A deer grazes in the crosshairs. Then a shot, the animal runs away. The huntress Thea Zinner collapsed dead in the high seat. Apparently the rifle had been tampered with. At the crime scene, Reuther discovers a strange observer who escapes the commissioners. A major manhunt is initiated. Neither Thea's daughter Susanne nor her partner Britta have a good answer to the investigators' questions. Only Klaas Wachowiak, the fiancé of heiress Susanne, has a motive. Because Reuther finds out that Thea Zinner wanted to disinherit her daughter as long as she was planning to marry the architect Klaas Wachowiak. The murder came at the right time and there is more at stake for Klaas Wachowiak than just losing Susanne. He owes millions. But then the investigators can identify the stranger from the crime scene. Has the Slayer drawn the wrath of militant animal rights activist Eric? Or is the secret separation from Britta the motive for the brutal act?