How would you know if your children are being groomed online? Preying on kids has exploded in the digital age as social media makes targeting victims chillingly easy for paedophiles. Their false identities and shifting online profiles mean police face an almost impossible task to catch them. The statistics are frightening. But now vigilantes are using the paedophiles’ own techniques against them. Leading the chase are people like Stinson Hunter, the Paedophile Hunter. This Sunday, Allison Langdon joins Stinson on the hunt for paedophiles and while the ethics are questionable, the results are undeniable.