The investigation has taken Maria and Sebastian to Stockholm. A former employee at Folkhögskolan is the main suspect and is wanted. The police are getting closer to solving the mystery, but big surprises await.

Two young people find a car at the bottom of a limestone quarry. A dead woman is sitting in the car, and it soon turns out that the victim has studied at one of the island's folk high schools. Maria begins questioning students in search of more information.

Maria and Sebastian struggle with communication. At the same time, Maria digs further into what turns out to be a complicated relationship drama. Friends now turn out to be bitter enemies and the previously idyllic surface is a thing of the past.

The midsummer celebration at the campsite is abruptly interrupted when one of the summer guests is found murdered. Suspicion immediately falls on the aberrant mysterious young man. At the same time, Sebastian is called for questioning by the police's internal investigations.

Maria tries to help the young mother Fanny get out of her relationship with the suspect, while hoping that Fanny can help solve the case. The situation escalates and Maria is forced to take great personal risks. 

A man is found shot and dying at a church ruin. It appears to be gang crime, but there is no motive and the weapon is gone. Maria and her team are looking for evidence that the murder is connected to a known criminal on the island. 

Maria Wern dives deeper into the destructive sports environment with inciting parents, bribes and elite bets. Kasper's sister is being threatened and the question is whether the case can be solved before more young people get hurt.

A young soccer talent is found murdered the day after a celebration of the A team's promotion to a higher division. An unhealthy sports culture is exposed, where everything is about performing and winning at all costs.