The man who smiled - Henning Mankell

Spiralling into an alcohol-fuelled depression after killing a man in the line of duty, Inspector Kurt Wallander has made up his mind to quit the police force for good.

When an old acquaintance seeks Wallander's help to investigate the suspicious circumstances in which his father has died, Kurt doesn't want to know. But when his former friend turns up dead, shot three times, Wallander realises that he was wrong not to listen.

Against his better judgment, he returns to work to head what may now have become a double murder case. An enigmatic big-business tycoon seems to be the common denominator in the two deaths. But while Wallander is on the trail of the killer, somebody is on the trail of Wallander, and closing in fast...

Over 35 million copies of the Kurt Wallander series sold worldwide.