Peterborough is changing. Migrant workers, both legal and illegal, are working in the fields, the factories and the pubs of the town. Most keep their heads down, keen to avoid trouble and DI Zigic and DS Ferreira from the local Hate Crimes Unit know all too well the issues that come with having a foreign name, no matter how long you've lived here. While Zigic ignores his father-in-law's needling about his Serbian background, Ferreira still burns with the resentment of years of childhood bullying for her Portuguese name and looks. But when a man is burnt alive in a suburban garden shed, it brings an unwelcome spotlight on to that world, and the two detectives are faced with investigating a murder in a community that has more reason than most not to trust the police.