and rolling, including one high up in a palm tree. we're able to spot a potential predator's car long before he gets to our house. >> this is our boy. >> the man walking in our back door is 21-year-old david shumaker, screen name freebird 72000. he's been chatting online with a decoy posing as a young teen named dee. >> knock, knock. >> hey, come on in. >> our 19-year-old actress, the decoy playing dee, invites him in. >> you can try one of my cookies. they're so good. >> did you make them? >> yeah, i made them myself. >> all right, i'll eat one. i like chocolate chip. >> online, he invites the girl, who told him she was 14 and a virgin, to a birthday party. and from his online chat, it appears he has his sights on a party for two. >> i want to be your first, baby. >> okay. >> you're going to put my [ bleep ] in your mouth? cause i like that. >> i guess i can try it. >> just let me drive, baby, i'll show you heaven. >> he goes on to talk about having different kinds of sex with the virgin, then gets almost poetic. >> you want to make love or [ bleep ] for your first time? >> what's the difference?