Arson is suspected when a house burns to the ground following a gas explosion and a man and a woman are found dead. Wallander and the Ystad police investigate and uncover an intricate web of lies, betrayal and secret love affairs.

When Manfred Stjarne is stabbed to death outside the Brada cider factory his wife Claire has inherited - suspicion falls on Polish worker Jan Kowalski,with whose wife Manfred was having an affair but Jan is found hanged - later evidence suggesting foul play. Benjamin Wilkes,an ex-psychologist who helped Manfred select redundancy candidates,is killed in the same way as Manfred,putting disgruntled ex-Brada employees in the frame but a third slaying implicates a former patient of Wilkes,who has connections to the Stjarne family. A newly loved-up Isabelle and Pontius start to fool around whilst on surveillance,taking their eye off the ball and allowing this suspect to confront Claire.