Hellfire - Karin Fossumová

A mother and child are found dead in an old caravan on a remote piece of land. There is a bloody footprint at the scene. Meanwhile, another mother confesses to her son that he is adopted. The man who abandoned them, now the focus of the boy's obsession, is not his real father. Chief Inspector Sejer is tasked with investigating the murder - and soon receives important information about the two families...