Chief Inspector Van Veeteren knew that murder cases were never as open-and-shut as this one: Janek Mitter woke one morning with a brutal hangover and discovered his wife of three months lying facedown in the bathtub, dead. With only the flimsiest excuse as his defense, he is found guilty of a drunken crime of passion and imprisoned in a mental institution.

One frozen January morning at 5am, Inspector Wallander responds to what he believes is a routine call out. When he reaches the isolated farmhouse he discovers a bloodbath. An old man has been tortured and beaten to death, his wife lies barely alive beside his shattered body, both victims of a violence beyond reason. Wallander's life is a shambles. His wife has left him, his daughter refuses to speak to him, and even his ageing father barely tolerates him.

A man like Harry had better watch his back...Following the dramatic conclusion of number one best seller The Thirst, Knife sees Harry Hole waking up with a ferocious hangover, his hands and clothes covered in blood. Not only is Harry about to come face to face with an old, deadly foe, but with his darkest personal challenge yet. 

The police urgently need Harry Hole. A killer is stalking Oslo’s streets. Police officers are being slain at the scenes of crimes they once investigated, but failed to solve. The murders are brutal, the media reaction hysterical. But this time, Harry can’t help anyone. For years, detective Harry Hole has been at the centre of every major criminal investigation in Oslo. His dedication to his job and his brilliant insights have saved the lives of countless people. But now, with those he loves most facing terrible danger, Harry can’t protect anyone. Least of all himself.

A young boy wakes to find his mother missing. Their house is empty but outside in the garden he sees his mother's favourite scarf – wrapped around the neck of a snowman. As Harry Hole and his team begin their investigation they discover that an alarming number of wives and mothers have gone missing over the years. When a second woman disappears it seems that Harry's worst suspicions are confirmed: for the first time in his career Harry finds himself confronted with a serial killer operating on his home turf.