The Man Who Smiled — Henning Mankell

After killing a man in the line of duty, Kurt Wallander resolves to quit the Ystad police. However, a bizarre case gets under his skin.

A lawyer driving home at night stops to investigate an effigy in the middle of the highway. The lawyer is hit over the head and dies. Within a week the lawyer's son is also killed. These deeply puzzling mysteries compel Wallander to remain on the force. The prime suspect is a powerful corporate mogul with a gleaming smile that Wallander
believes hides the evil glee of a killer. Joined by Ann-Britt Hoglund, Wallander begins to uncover the truth, but the same merciless individuals responsible for the murders are now closing in on him.