Crime, and what to do about it, has never been so urgent a problem. Moral, social, economic and psychological explanations have all been tried without success. But in the search for an answer, the resources of one science have been overlooked. In the last decade biology has made astonishing advances in investigating the link between the brain's physiology and criminal behaviour. There is a sense in which some criminals are born, not made - in which case can we truly call them criminal, or just ill? So should the police, judiciary, social workers and psychologists change their attitudes accordingly? This book investigates.