For twenty-five years forensic psychologist Paul Britton has interviewed, assessed and treated people with damaged or broken minds. Some were responsible for terrible crimes, others were stopped before it was too late. He can 'walk through the minds' of those who murder, rape, torture, extort and kidnap. For him, the answers aren't just hidden at bloody crime scenes or in the post-mortem photographs - instead, they are often locked away within someone's sub-conscious or deep in their past. That is why the police have called on him to help with many high-profile criminal investigations and catch those responsible.