and it starts with people like casey mcclure. >> in january, 2015, she led a tour of some of atlanta'sorgia lay makers saw for themselves. she called mcclure's hotline and a volunteer answered. >> it's going to take a few days. but don't worry. if we find her and you saw it on the news and you called me, it was meant for you to find her. >> with a little research, they found her granddaughter; for sale on the internet. casey's volunteer called sergeant kennedy. and kennedy's team started looking. >> they soon suspect a local trafficking ring may be involved. >> that's them. that's both the males and the female. >> they track the suspects to a local bar. >> put your hands behind your back for me. interlace your fingers. >> no, no, no. don't do that. don't do this. don't do this. >> who's purse is that? >> that's my purse. >> the >> there's a gun in it. >> it's not my gun. >> you can help me out a real lot. you can take a girl off the street. >> does she have red hair? >> she might, yeah. >> this suspect appears to cooperate. >> it might be her. >> i think i did see her. >> where? >> it