The abduction of an 11 year old girl and the strangulation of a young woman bring back memories of the murder of young Trudy Hibbert three years earlier. Known paedophile Paul Gregory was acquitted but police and locals fear he is killing again. Dr Tony Hill is convinced the attacks bear the hallmarks of a different killer - until a bizarre link suggests more deaths will follow. But Tony is puzzled - the victims don't fit an established psychological type. The more victims there are, the more diverse those victims become. Old and young, black and white, the motive or mission of the killer seems indistinct...