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.