here's josh mankiewicz with "final curtain." >> hello? >> hi, baby. >> hey, what's going on, what do you want me to do? >> i don't know. leave me. >> reporter: the woman on the phone was just hours away from walking down the aisle, to marry the man on the other end of this call, to pledge her love, until death did them part. >> i'm going to go do something right now, and you're not going to see me for the rest of your life. >> reporter: instead, she found herself in the middle of a twisted murder plot that would change her life forever. >> what did you do? >> i think you know what i did. >> reporter: she knew. or did she? her name is rachel buffett. you may remember her from a story we first reported in 2016 about her then fiance, dan wozniak. and about two families in search of the truth. >> i know a lot of answers now. a lot more than i had the last time we met. >> reporter: now, the final curtain. >> i believe with all my heart they were trying to get me back and kill me. >> reporter: new information. >> there's things people need to k

here is josh mankiewicz, with the "the mansion on ocean boulevard" win. >> some places feel secluded, insulated. secure. >> i can remember saying that and feeling that and saying nothing bad could ever happen here. >> here is coronado, california. just over a bridge from san diego. a town of beautiful beaches, people and homes. like this one, on ocean boulevard. accepted in the summer of 2011, this mansion became ground zero for mystery. >> this is a very bizarre death. there is no doubt about it. >> well actually there's been plenty of doubt and plenty of theories. >> my sister was dead. and did a lot of things growth remind? yes. >> secrets both suspected and imagined. >> is it possible that other people know more than they're saying? yes. >> it's certainly possible. beyond that it's hard to say for sure. especially when it seems everyone has a story to tell. and those stories lead to accusations, often with zero proof. >> people are gonna believe what they're gonna believe with no evidence. >> paradise valley arizona was home for this family, but the summers they spent in coronado

here's josh mankiewicz with the conclusion of "troubled waters." >> beach volleyball is a kid's gameboth. detectives had put him in jail. but then, two weeks after eric's arrest, came this headline in the local paper. "witness in murder case doubts suspect's guilt." tina new, who'd worn a wire and helped police nail eric, now said maybe he didn't kill pegye. >> i knew that the kids had lost their mom, and now they're gonna probably lose their dad for a very long time. and so i felt guilty. >> guilty that she'd helped jail a man she once thought she'd marry. >> and i remember he called me from the jail and he told me that he had tried to hang himself with his sheets. >> it was eric's frantic behavior from -- from the lockup, that was enough to make you think twice. >> i didn't want him to die. >> you felt guilty. >> i felt guilty. >> and you tried to roll the whole thing back. >> yeah, i did. >> but, she says, she always believed he was guilty. and in the winter of 2000, eric bechler went on trial. the star witness, tina new. a witness who was, to be fair, compromised. not just by her