A picture of a child sex offender

Guilty as charged: Seemingly ordinary except for his brilliance in maths, Nur Fitri was jailed up to five years after British police found 30,000 videos and photos of smut depicting the most extreme forms of child sexual abuse on his laptop.

ABDUCTED while playing on her bicycle outside her home in Wales, all that was found of five-year-old April Jones after months of police search were some traces of blood and fragments of skull in a fireplace at the cottage rented by a lifeguard known as Mark Bridger.

Like many paedophiles, Bridger was reportedly a well-regarded member of the community and everybody knew his name.