Per Mattsson

About the upper-class family Bark and the family members' relationships with each other and others.

Thomas, a scientist, lives in a childless marriage. When his wife travels to Copenhagen he begins an affair with a girl of 19. The girl and large amounts of drugs disappears from Thomas laboratory.

In the middle of upptakterna to the medieval week in Visby, a fire, where the near 70-year-old Frida is assumed to have perished in the flames. When such a number of murders are taking place, the trail leads Maria Wern and the police colleagues to a summer vacation village where everyone knows everyone and where the discovery of documents with Latin texts and arcane drawings will get the police to worry about attacks actually has to do with the celebration.