locate, and return home 54 missing kids on craigslist. now, that is a tiny fraction of what the total scope of the problem is. we found 12 kids on back page. >> reporter: the national center for missing and exploited children gave us current missing child posters, all being sold for sex. $52 mi-- 52 missing persons posters behind me. christine, monica, rachel. and says all 52 of these girls are being sex trafficked. erica, ashley, nicole. the vast majority of them being sold on the internet. we've got white girls here, black girls here, hispanic girls, asian girls. the youngest girl on this wall went missing when she was 13 years old. a lot of these have something in common. she may be in the company of an adult male. over here, christina may be in