"In this forest," her grandfather told her, "there was a draugr, a dead man who had returned to life." The word echoed threateningly in her head. Draugr.

Just outside Erebros, the body of an unknown person is discovered. Whoever the perpetrator was, they took care to create a macabre scene and erase any evidence that would allow the victim's identification.
Inspector Anders Oikonomidis will hear Yussef Alexanderson, the head of the Signum, say in horror: "I have never seen such disrespect for the dead before. Whoever did this has the devil inside them. And even though I am not superstitious, Anders, since last night I have had the feeling that this evil has stuck to us and is following us everywhere."

A shadow will begin to haunt the inspector and his team, while new murders disturb the idyllic Swedish town.
Satanic crimes and ancient pagan rituals will lead Anders into an underground world where the boundaries between reality and the supernatural become indistinguishable.