An ex-con is brutally murdered with an ax in Kaalbringen. Then the body of a wealthy real estate mogul is found, also the victim of a violent attack. There appears to be a serial killer on the loose, and Chief Inspector Van Veeteren is called in to help the local police. As details surrounding the grisly murders are collected, Van Veeteren finds little to go on. But then there's another murder, and shortly thereafter one of Van Veeteren's colleagues,...

It's a sweltering summer in Sweden and Chief Inspector Van Veeteren is long overdue for a holiday when a secretive and dubious religious sect comes under investigation. One of its members, a girl on the cusp of adolescence, is found dead in the forest near their holiday camp, brutally raped and strangled. The members of the Pure Life choose to remain silent about the incident rather than defend themselves.