Faceless victim

Can one escape their fate?
In a small Swedish town, two brutal murders have been committed. The victims are two adult men who were once classmates and inseparable friends. Everyone knows that in school they bullied and beat up kids who had the misfortune of not being liked by them. Many suspect that as they grew older, they didn't change much. At the crime scene, the police found a photograph of that same class. The faces of the victims were crossed out.
Fabian Risk studied in the same class. He is immediately drawn into the investigation.
Soon, new victims appear - former classmates. Fabian begins to fear that he himself is in danger. However, working feverishly on the case, he fails to notice the most important thing, and he will have to pay a heavy price for it.