he did not want amber frye to find out he was married. he did not want amber frye to find out he was married to a woman who was missing. >> reporter: in the a&e series the phone interviews with scott peterson were conducted by his sister-in-law janie. squle knows he's being recorded. he knows he's being interviewed. and he knows he's being recorded for this series. so are you worried he tailored his answers at all? >> he did. i'm sure he was very careful about what he said. but we're not telling this from scott's point of view. how i would put it is scott's voice is a voice in this series. and that's auth entically what he wanted to say. >> peterson points to defense theories about his innocence. >> there are so many witnesses who saw her walking in the neighborhood after i left. >> the state contends that laci peterson was killed in the late night hours of december 23 into the morning hours of december 24. that is their theory. based on a lot of circumstantial evidence. the defense theory has varied. why? because it's not true. >> report