Psychopaths have long captured the public imagination. Painted as charismatic, violent predators lacking in all empathy, they provide intrigue and horror in equal measure. But what precisely is a psychopath? And can they ever be cured? Professor Uta Frith explores the psychopathic mind including one of the most notorious of all, Moors Murderer Ian Brady. Usually considered as untreatable, this program explores breakthrough techniques that may be used to do the impossible - to cure a psychopath.