Inspector Bill Slider is called to cope with a disfigured corpse grotesquely left in a children's playground. His enquiries plunge him into the shadow world behind the fashionable facade of Shepherd's Bush, among the victims of the Welfare State and the crime barons who prey on them; a world where no-one is who he says he is, and lying to the police is second nature. Slider's thankless task is to convince the witnesses, against all available evidence, that honesty really is the best policy. And with his lover Joanna away, fate seems suddenly determined to strew his private life with temptations.