Sexual predator Colin Mitchell has been described as the "worst of the worst" as yet more details of his criminal past come to light.
Mitchell was jailed earlier this year for kidnapping a 23-year-old woman and assaulting her at a West Auckland quarry.
It's now been revealed he first raped a woman in 1973, when he was 15 years old.
He when on to rape two other women before the 2017 quarry attack.
Herald crime reporter Anna Leask spoke to Larry Williams about the case.
"He's one of the worst I've covered. The police have described him as a monster, and his victims certainly have as well."
LISTEN TO ANNA LEASK TALK WITH LARRY WILLIAMS ABOVE