The discovery of a female corpse in Morgenthal forest initiates the hunt for a serial killer. Luc Conrad and Reto Doerig fear that the  murderer will strike again soon.  His next victim could be Anna-Maria, who is fighting for her life in a dark and damp basement. Luc neglecting his business while searching for Anna-Maria, puts Erika and Fabio under permanent stress.

In the Susanne Brunner homicide case, Anna-Maria Giovanoli's brother Mario is regarded as the prime suspect - with the manhunt at full speed. Since Anna-Maria's is biased,  Reto Doerig finds himself in charge of the investigations. The people of Morgenthal have their minds set on recluse Schwarzkittel as the killer of Susanne. The consequences prove to be almost fatal for the old man. Anna-Maria s..

Anna-Maria arrests her brother Mario herself , when he shows up at her doorstep - covered in blood. The testimony of the murder suspect puts an entirely new spin on the investigation. Moreover the Aargau police department puts their efforts into solving the deadly fall of a talented free climber. The young woman turned a lot of people against her - due to her lifestyle and her provocative demeanou..

Is it possible to raise the dead? Luc and Fabio deal with this question, having discovered the murdered man of the house in the basement of his luxurious mansion. He made a lot of enemies, due to his bizarre burial method. Erika suffers from a severe case  of butterflies. And in Aarau Anna-Maria makes a disturbing acquaintance.

In a hotel room in the spa town of Baden Ayumi, a japanese woman, kills her tyrannical father. She is able to cover up her involvement. Now an innocent man faces prison. Will Luc find out the truth just in time. Erika's golden year romance could end as abruptly as it has begun. And Anna-Maria tells her brother, who her real father is.

A brutal murder in the Aargau countryside rips through its population and police department. Mario Giovanoli is tortured by flashbacks and his sister Anna-Maria has disappeared again. Growing more and more desperate, undertaker Luc Conrad looks for her, supported by Fabio and Doerig. It all leads up to a fight for life and death.