Project Conscience promises to be the solution. It is a bold attempt by a powerful group of scientists, politicians and senior law-enforcement personnel to use gene therapy to treat male criminals and cure violent crime. But among their number are those with a more sinister agenda, who would go further and turn the dream of Project Conscience into the nightmare of Crime Zero. Luke Decker, a criminal psychologist disillusioned with the growing dependence on genetic science, is on the verge of resigning from the FBI when a death-row killer's whispered revelation threatens everything he believes in and catapults him into the heart of the conspiracy. Decker's only ally is Dr Kathy Kerr, an old flame and ideological adversary, and the geneticist behind the original Project Conscience. Together they must put aside their differences to fight against a scheme so ruthless in intent and so vast in scope that it will irrevocably change the evolution of mankind itself.