Detective Harry Hole is after another serial killer in something of a change of style for Nesbo. Less of the explicit violence and gore, more psychological movings, more Hitchcock than Grand Guignol.
Someone is abducting young women from the daylit streets of Oslo. Bodies are found, characterised by a chopped-off finger and a blood red diamond secreted on the corpse. The case is given to Harry's arch rival, the man he suspects of being a smuggler and a murderer, Inspector Tom Waaler. The two are due a showdown ...