whose name was thrust into a cultural moment. amber frye. >> what does a saga like that do to a person's life? >> i would say from day one it completely changed my life. >> and the story told by a frustrated ex journalist, convinced the cops, prosecutors, the public got it all wrong. >> did scott peterson kill his wife? >> i do not believe he did. >> a video we found buried in the court archives. >> you are telling me that you have no idea of where laci is. >> no, i do not. >> scott peterson talking to a detective hours after sounding the alarm, laci was missing. but before we get there we will begin here with laci peterson's mother. sharon, surrounded, fortified really by laci's best friends.