Isabelle and Pontus pass out as police officers but he is dismayed when she says she wants to put their affair on hold in order to travel.Her plans are cut short when she joins the investigation into the death of her friend from the gym,Therese,murdered by burglars. Therese's loser ex-boyfriend Fabian is in debt to very heavy people and offers them her jewels but is he the killer? Violent boxer and ex-con Patrik Lippowski,a former lover of Isabelle,who fled from him and changed her name from Rebecka to Isabelle to escape him,is another suspect,but he is murdered with Isabelle's gun. In finding the killer Pontus's love for Isabelle is put to the test whilst Wallander advises Katarina when her bitchy teen-aged daughter starts stealing.

Corrupt businessman Filip Pasolic stands trial for bringing illegal workers into Sweden and using them as slave labour. Wallander is injured by a car bomb intended for Kristina,who is prosecuting Pasolic and she is given police protection. At the same time pressure on the illegal Lithuanian work force to re-build Ystad's recycling centre in time for it to get an E.U. grant results in two men being killed,one of whose little sister,Natalia,sees construction manager Zoran bury the corpses. She goes to the police and implicates Zoran but takes off again with Zoran in pursuit. Wallander can link Zoran to Pasilic and needs to find him before he gets to Natalia in order to strong-arm him into testifying against Passilic. He also has to dissuade Katarina from resigning as,due to witness intimidation,the case is going against her.