After being called to investigate an unidentified girl wandering along an empty field, Inspector Wallander witnesses her inexplicably set herself on fire.
While trying to find out who she was, three bizarre and brutal murders take place, involving the victims being scalped.
On the home front, Wallander is adjusting to being separated from his wife and is forced to deal with the difficult relationship he has with his aging father.
Two seemingly unrelated cases - the death of a man at an ATM machine from an apparent heart attack and the murder of a cab driver by two teenage girls - become entwined when Wallander investigates further. In doing so, he finds a conspiracy that reaches beyond the country's borders.
Missing teenagers and the murder of a colleague appear unrelated at first, but as Wallander investigates, he discovers that the murderer has intimate knowledge of his victims and seems to be one step ahead of Wallander.
Inspector Wallander finds a bloodbath when he takes a look around an isolated farmhouse on a routine call. A dying woman manages to say a word to Wallander before she dies and it ends up getting leaked to the press which causes major problems. Wallander finds his personal life in a mess.
Wallander finds his life spiralling into depression after he kills a man in the line of duty. Wallander decides to quit his as Sten Torstensson, an old friend, asks him to look into the death of his father in a car accident. After having dismissed the case, Wallander later finds out that Sten has been found dead, believed to have taken his own life. Wallander returns to work to investigate what looks like it could now be a double murder.
The disappearance of one elderly man turns into a murder inquiry that may involve other killings. As he investigates the links between victims, Wallander becomes close to one of the primary suspects.