By Tom Mangold. Ex BBC Panorama. This program gives an insight into the minds of dangerous men, psychopaths who have been imprisoned for committing terrible crimes. In 1991, a small number of these top security prisoners volunteered for psychotherapy with a prison psychiatrist and agreed to allow him to video-tape the actual treatment. The psychiatrist Dr Bob Johnson was convinced that he could break the mould and treat and cure these men. This program asks what is to be done with these men?