The cold and beautiful coast of Iceland. Expensive spa hotel. A hotel, next to which the corpses of victims of brutal ritual murders are found again and again... Hotel owner Jonas is arrested on suspicion of crimes, and his lawyer and talented amateur detective Thora Gudmundsdottir decides to help him prove his innocence. She begins her own investigation - and gradually understands: the motives for the murder should be sought in the distant past. In the terrible tragedy underlying the mysterious rumors and legends that are associated with the place where Jonas's hotel was built...