A part of a dismembered corpse is washed up on a rocky shore on the outskirts of Gothenburg. The only worthwhile lead Detective Inspector Irene Huss has to go on is a striking tattoo on the torso. Her investigations lead her to Copenhagen, where she is plunged into a manhunt for a depraved and vicious killer. A killer she knows will soon strike again, and who is becoming far too interested in her family...