dude... I just spent the day trying to secure help for a PI that travels the country working on cases like this. It's all over, and at all social and economic levels. From lower and middle-class families that simply abuse their kids to upper class/wealthy families that even pimp their kids out, and spend a great amount of time interacting with similar families (to trade for new pictures and favors from each-other's kids)...
To add insult to injury (this should hit you close to home, fistful), a great many of them may very well be sitting next to you in church: seems many find Christianity a GREAT form of camoflage for what they do/are. The one case we worked a few months ago, there was some form of Christian "parephenalia" on almost every wall (pictures of Jesus, crucifixes, posters with Christian sayings). All camo, hiding the monsters...
Y'all excuse me, I think I need a drink...