Bayley - serial rapist turned murderer

Adrian Ernest Bayley likes hurting and dominating his victims.

The predator with a gross sexual appetite may have understood his victims' fear, since as a child he was abused physically and perhaps sexually.

Born Adrian Ernest Edwards on July 14, 1971, he grew up in Melbourne with four younger siblings and an abusive father, who once smashed his son's head through a wall.

Bayley told a prison psychologist he was also sexually abused from age nine to 15 by an older female, though this claim has not been verified.

"There is certainly evidence of physical abuse - in my opinion, some evidence of the possibility of sexual abuse," psychologist James Ogloff later told a court.

Professor Ogloff believes Bayley's borderline personality disorder contributes to his impulsiveness and unstable self image.

Bayley fantasises about assuming power and control over his victims, and the psychologist believes he derives pleasure from inflicting pain.

His criminal record suggests this is the case.

His first rape was committed just months after he walked down the aisle, in 1990, and a string of sexual assaults soon followed.

He spent almost two years in prison before being released in 1993, when he trained as a pastry chef.

Bayley had two children with his first wife before they split. He married again, fathering another two children.

He changed his last name from Edwards to Bayley in 2000, but returned to violent sexual crime.

In the early 2000s there were reports to police that a young, fit man was targeting prostitutes in St Kilda.

He would drive them to a laneway, park so his victims could not escape, and then brutally rape them.

When a judge jailed him in 2002, he said Bayley used threats and violence to satisfy his "gross sexual appetite".

Bayley was released on parole in 2010, and was working as a labourer in 2012 when he attacked again.

This time he killed his victim, Jill Meagher.

Bayley did appear to be sorry, Prof Ogloff said.

Though he said it was quite common for people to be very remorseful but to persist in engaging in that behaviour.

Bayley seems to agree.

"They should never have let me out," Bayley told police after confessing to killing Ms Meagher.

"How many chances does a person need."