Criminologist and child protection expert Mark Williams-Thomas told Daybreak: “They were living with him and did not know. They really were living with a monster.
"And for anyone outside who says ‘why did you not know? Why did you not see what was going on?’ I can completely understand. I’ve spent a lot of time with the family, I’ve spoken to the people who knew him and I tell you what he was a normal person.”
In an in-depth interview with ITV's Tonight, Tia Sharp's mother and grandmother tell their harrowing story and speak openly about their loss
The mother of murdered schoolgirl Tia Sharp has said the man responsible for her death "deserves to suffer".
Stuart Hazell, 37, changed his plea to guilty in the murder trial of schoolgirl Tia Sharp claiming her 'family have suffered enough'.