happened to her, too, the other woman whose name was also thrust into a cultural moment, amber frey. what does a saga like that do to a person's life? >> well, i'd say -- i mean, from day one it completely changed my life. >> reporter: and the story told by a frustrated ex-journalist, convinced that the cops, the prosecutors, the public, got it all wrong. >> did scott peterson kill his wife? >> i don't believe that. i do not believe he did. >> reporter: and a video we found buried in the court archives. >> so what you're telling me, scott, is there's no -- you have no idea where laci is? >> i do not. >> reporter: scott peterson talking to a detective just hours after sounding the alarm. laci was missing. but before we get there, we'll begin here with laci peterson's mother sharon rocha surrounded,