Crime Inspector Maria Wern returns to duty at the Police Department on the island of Gotland, and is immediately thrown into a murder investigation.

A couple of brutal and mysterious murders point to Uppsala University. Johan, a last year student at the police academy, gets involved in the investigation. He enrolls a course at the University in order to, under cover, track down the killer.

After losing his parents in an accident, André quits his job and moves to a small town.