written on it were two names, billy payne and billie jean. and across the side, "i'm your huckleberry." now at one point, did they unfriend you on facebook? >> i think that we did it to each other. i unfriended them, they unfriended me. >> reporter: who unfriended who first? >> i did bill first and then i think billie did me. and i unfriended her. >> reporter: but unfriending would only be the beginning. >> there's no pulse. they're white, they're dead. there's a baby involved. >> reporter: when we come back, the young couple's house becomes a crime scene. >> my impression after, you know, the first week was, it looked like a hit. >> reporter: like a contract hit? >> right. >> reporter: suspects in custody, and an investigation that leads all the way to the cia. >> it's so incredible. the story is simply unfathomable. >> reporter: stay with us. inally here. long way from the sandlot. first game in the majors? you don't know "aarp". because this family is enjoying a cross-country baseball stadium trip they planned online at aarp travel. it's w

. >> reporter: she suspects two facebook friends, billy payne and his fiance, billie jean. >> reporter: who confronted who first? >> i did bill first and billy did me, and i unfriended her. >> reporter: a move that surprised some of her friends who thought janel had a crush on billy. her parents believed the harassment was only worsening because of e-mails they began receiving from a mysterious figure named kris who seems to have come to town to watch out for janel. >> reporter: what type of stuff did he do? >> he said he was here to protect me, my parents. >> reporter: chris was doing surveillance work. >> he said he was. >> reporter: weren't you a little worried about this cia agent writing your daughter? >> he said he couldn't use his real name and identity. >> reporter: but e-mails were full of convincing things about janel and her family. >> he would tell me what i was wearing, what i was doing, how my hair was. >> reporter: chris told janel's parents in those e-mail exchanges he was carefully watching the couple who was allegedly making threats against their daughter. in one, jen