michael stern was very persistent.to know what we were doing. >> it's breaking my heart to not know where she's at. >> police have hit a wall until they get a phone call from a former classmate. someone who went to high school with sarah stern and he has quite the information to share. >> anthony curry is an aspiring film director, and he went to high school with liam and sarah. >> tell me when you first became friends with liam. >> we didn't get real close until like junior year of high school. he liked "the sopranos." we played music together. >> why did you go to police? >> just doing the right thing. >> anthony told us that he had wanted to talk to us about the information that he had. anthony had told us that on thaens thanksgiving evening, which was november 24th, that he had went to liam's house in neptune city and that while there liam had informed him what he planned to do to sarah stern. >> he tells you it's an idea for a movie. >> a plot for a movie, yeah. i make movies. i'm a filmmaker. he used to tell me i

to pay tribute to sarah, her father michael stern. good morning to you. >> good morning.steve: did know where she kept it? >> no. as far as we know he didn't, no. steve: then fast forward, she's missing. at what point did you start to suspect him? >> actually the first day she was missing. steve: why? >> because the phone was missing. sarah's phone wasn't, sarah's phone was off and he had lost his phone, police told me on my way back from florida that his phone was missing too. that was very strange. steve: after two months they found her. >> they never found sarah. steve: rather they found out he was the one with a sting? >> yes. steve: tell me about that. >> well his friend came forward with information that the police used to further question him and it was, it is just a horrible thing, the way everything came apout. they set up a string operation to record him and he basically confessed on the recording. steve: you just saw a little of that video. there the description is so disgusting. >> it's horrible. steve: how do you get up when something like this has happened i