Blessed are those who thirst

The Oslo police are baffled. Crime scenes are being found covered with blood, but there is no victim. Only an odd series of numbers is left behind. When a girl is brutally raped in her apartment, Detective Hanne Wilhelmsen is charged with solving the case. Hanne quickly notices strange similarities with the blood-stained crime scenes. But the victim's father has started an independent hunt for the rapist...and Hanne will have to race against time to prevent a victim becoming a vigilante.