A man is making a crude leather mask with slits for eyes and mouth, and an iron spike fixed in the middle of the forehead. It is a 'death mask', once used by Icelandic farmers to slaughter calves. He has revenge in mind. Meanwhile, with Detective Erlendur absent, his colleague Sigurdur Oli is in the spotlight. A school reunion has left Sigurdur Oli dissatisfied with life in the police force. Iceland is enjoying an economic boom and young tycoons are busy partying with the international jet set. In contrast, Sigurdur Oli's relationship is on the rocks and soon even his position in the CID is compromised: when he agrees to visit a couple of blackmailers as a favour to a friend he walks in just as a woman is beaten unconscious. When she dies, Sigurdur Oli has a murder investigation on his hands. The evidence leads to debt collectors, extortionists, wild parties. But when a chance link connects these enquiries to the activities of a group of young bankers, Sigurdur Oli finds himself investigating the very elite he had envied.