S22, E1: Renowned author Johannes Weyrich is found murdered in his villa by housekeeper Anna Linzer. Detectives Hansen and Kaya take the lead, uncovering secrets buried in the literary world. The case takes an unexpected turn when they discover Weyrich was the half-brother of Otto Harlander, famed author of the "Räuber Frantz" series. As they dig deeper, the suspects multiply, each with strong motives. Navigating a tangled web of rivalries and family secrets, the detectives must piece together the truth to uncover the killer.