When one of his teachers fails to show up for work, a high school principal calls his friend on the Göteborg police force. To Detective Inspector Irene Huss's surprise, her boss takes the
complaint seriously, even bringing her with him to a remote cottage in southern Sweden to investigate. There they discover the body of the teacher in question, victim of a rifle shot to the head. When they visit his parents to break the news, they find the couple dead in their bed, each shot between the eyes. The family's sole surviving member, their daughter in London, is too grief-stricken for questioning. A swath of suspects arises as Irene investigates, but she has a hunch the answers to this case lie in England.