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.