How are people know, that the problem!!
only a few weeks ago, my Daughter had a visit from "child Protection" they informed her that one of the couple that was baby sitting her 5 month old Daughter was a convicted paedophile and asked lots of questions, he has now been arrested for breaking bale conditions etc. The guy was a partner of her trusted friend, she also had no idea her partner was a convicted paedophile. it was all very upsetting for all concerned, fortunately he was never alone with my granddaughter and no harm done!!