“Harry Hole stepped onto the stairs and squinted into the bright June sun…. He felt that everything was in harmony, in balance…” Thus ends the novel “Police,” but not the story of the beloved hero by Jo Nesbø. Alas, the detective Harry was deceiving himself: the world was still cruel and imperfect, and a strong hand was needed to bring to it at least the semblance of order. Harry Hole returns to service in the Oslo police in order to begin hunting a serial killer who attacks those who arrange dates via a dating website. The detective’s trail leads him to his own bleak past…