Not a Wallender novel, the latest book from Henning Mankell is set in Sweden and China. The blurb includes a tantalising opening line: "Revenge Can Take More than a Lifetime..."
From the Blurb:
One cold January day the police are called to a sleepy little hamlet in the north of Sweden where they find the victim of a savage murder lying in the snow. As they begin their investigation they notice that the village seems eerily quiet and deserted. Going from house to house, looking for witnesses, they uncover a crime unprecedented in Swedish history.