Crime Investigation Australia: Most Infamous

In the 1980s and 90s, on a cliff-top walk near Bondi Beach, gangs of thugs staged bloody attacks on anyone they perceived to be gay and then hurled them to their deaths into the ocean below.

A look at the brutal murder of Wollongong teen Kim Barry, and her murderer Graham Potter, who went to prison for the killing but was released after 15 years, going back to a life of organised crime.

A look at the crime kingpin, Michael Kanaan, who had a volatile temper fed by deep insecurity. In a wild crime spree in the 1990s, Kanaan murdered three people and conducted a war with police.

The horrific rape and murder of Virginia Morse and the random killing of a farm hand in 1973, led to a dramatic police chase and shootout in the NSW Hunter Valley.

The compelling story surrounding the hunt for the mysterious 'Granny Killer' and how a few minor and seemingly unrelated incidents were eventually drawn together by detectives to identify him.

A look at the disappearance of Queensland teen Daniel Morcombe, as well as the rape and murder of Sian Kingi, a 12-year-old school girl.

The torture, rape and murder of young backpacker tourists in the Belanglo forest, south west of Sydney, has entered Australian criminal folklore.

The torture, mutilation and murder of six young men in South Australia led to speculation about a group of depraved killers dubbed 'The Family'. Only one man has ever been convicted in the case.

Failing in his studies and dreaming of living a celebrity life, Sef Gonzales devised a plan to get his hands on his family's money, by murdering his mother, father and sister, to claim an inheritance.

Seven young women were raped and murdered in South Australia in the 1970s. The police hunt for the killers came to a bizarre end when one of them died in a car accident.