Forensic psychologist Nigel Latta explores the mind and motivations of Steven Williams who brutally beat his six-year-old stepdaughter, Coral Burrows, to death in 2003.

Shannon Flewellen is serving a life sentence for the brutal killing of Korean backpacker Jae Hyeon Kim.

Nigel Latta looks at the life of Joseph Reekers who murdered Auckland hairdresser Marie Jamieson in 2001.

Nigel Latta looks at the life of George Baker, who beat 17-year-old Liam Ashley to death in the back of a prison van.

The life of Gavin Hawthorn, one of New Zealand's deadliest drink drivers.

Nigel Latta takes a look at the life of Paul Joseph Dally. The man who abducted and killed 13-year-old Karla Cardno.