He is 29 years old and commits his horrendous crime alone. He is an underachiever, unskilled, doesn't have a regular job and he is now a mass murderer. What made Martin Bryant go on a brutal killing spree at Port Arthur taking the lives of 35 people? Working with a leading Australian forensic psychologist, investigative journalist Rochelle Jackson takes us deep into the minds of eight of the country's most notorious criminals: serial killer, Ivan Milat female sex offender, Karen Ellis serial arsonist, Peter Burgess armed robber and escapee, Brenden Abbott child killer, Kathleen Folbigg murderer, Matthew Wales and gangland warlord, Carl Williams. She probes their motivations, delves deep into their pasts and unlocks the dark side of their humanity.Inside Their Minds is a penetrating, forensic and revealing investigation of the criminal mind.