Now in paperback, this is a self-help guide which encourages readers to discover their inner psychopath. Professor Dutton is a psychologist whose expertise is pyschopathy. Bestselling author and former SAS agent Andy McNab has been diagnosed as a good psychopath, using his psychopathic tendencies of ruthlessness and fearlessness to get the best out of life and himself. Together, they explain how to use qualities such as charm, self-confidence and courage to succeed in life.