The Fifth Woman
Henning Mankell
 A sadistic serial killer has been preying on men, beginning with a retired car salesman whose interests appear to be limited to bird watching and poetry and whose body was discovered in a punji stick pit and a flower shop manager, found starved and garrotted in the woods. Wallander soon realises both men have a past record of violence towards women, and after another man is drowned in a lake, he goes on the hunt for an avenging angel...