S3, E12: A routine case for the Wolfratshausen police department: Hubert and Staller are supposed to investigate broken lockers at the "See-Oase" retreat. But when there they discover a dead body in the hotel's mud bath. Managing director Ute Thoma is in shock – the dead woman is her twin sister Ulrike, who runs the renowned hotel with her. Accusations begin to circulate: Reinhold, who works at the hotel's reception, suspects Robert Jung, Ute Thoma's new boyfriend. He had a heated argument with the murder victim the night before. But Robert has an alibi for the time of the crime. Then masseur Mark Werth comes under pressure to explain himself: in his locker, Hubert and Staller find work clothes with clear signs of a fight at the scene of the crime. Mark Wert claims his innocence and assures the police that someone must have planted the clothes on him. Hubert and Staller find it hard to believe the masseur, who had recently received a warning for bad behavior. But the evidence is too thin to keep the masseur in police custody. Then, however, the case takes a new turn: Ute Thoma receives a threatening letter. Hubert and Police Councilor Girwidz trust their investigative instincts: Mark Wert is not that bold. They are convinced that the culprit must be someone else from the hotel's immediate vicinity! Girwidz orders Hubert and Staller to provide on-site personal protection. The duo are less than pleased to find themselves staying at the "See-Oase". It soon becomes clear that it is not always easy to focus on the essentials in this wellness world. And when Hubert and Staller are not distracted by the pleasant temptations offered in the wellness program, journalist Nadine Scholz causes quite a mess in their investigations. Finally, it is once again their clumsy colleague Martin Riedl who, by sheer coincidence, puts Hubert and Staller on the right track: apparently, the perpetrator is playing a double game...
