The Man Who Smiled
Henning Mankell
 After killing a man in the line of duty (in The White Lioness), Inspector Kurt Wallander finds himself spiralling into an alcohol-fuelled depression. He has just decided to leave the police when an old friend, Sten Torstensson, approaches him to secretly investigate the recent death of his father in a car accident. At first Kurt dismisses his friend's suspicions as unlikely, when Sten is found dead, murdered with no doubt, in exactly the same manner as a Norwegian businessman shortly before. Against his previous judgement, Kurt returns to work to investigate what he is convinced is a case of double murder.