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. >> 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. >> 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. >> 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. >> now, the final curtain. >> i believe with all my heart they were trying to get me back and kill me. >> new information. >> there's things people need to know, things that need to be said. >> and a questi

here's josh mankiewicz with "lauren's promise". ♪ ♪ ♪ >> graduation at the university of utah inn saltcity, home of the utes. a time for selfies, smiles and celebration. in may 2019, itty 500 graduates and their families packed the universities huge arena. lauren mccluskey should have been here to, receiving her degree in cap and gown. as happy as her classmates. except she wasn't. and the story of what happened and why is as sad as it is eye-opening. >> this wasn't one of those things where it was out of everyone's control. it was in like a natural disaster. >> how many times two women have to call for help before the university of utah realizes, you know what, we ought to step this up? >> well of the two of you thinking at that point? >> i couldn't really fathom what had happened. >> neither of us slept at all that night. >> it's a story that could so easily have ended differently. if just one person had stepped up. if just one more phone call had been made. one dot connected. instead, the repercussions of a preventable murder would continue for years to come. >> lauren grew up in th

here is josh mankiewicz with "secrets from the grave". >> wander through any graveyard, and you willthem, mysteries etched in stone. lives cut tragically short by war, disease, misfortune, and sometimes murder. many who arrested in these peaceful places took secrets to their graves. but some here are mainly awaiting. waiting for someone to take interest and ask questions. as you are about to see, the dead can be exceedingly patient. our story begins on a frigid march night in 2009, with a house fire in stow, ohio. that fire was important. not for what it destroyed, but for what it illuminated. >> 9-1-1, where's your emergency? >> it's union they'll drive. there is a fire. >> the house, or what? >> the house. >> the caller was a 16-year-old girl who told the 9-1-1 operator that she, her parents, and her younger brother had all escaped, but barely. and her father took the phone. >> i don't really understand. it -- the entire front of our house is just engulfed. >> okay. i'm glad everybody got out. >> that dad was scott purk. you will be hearing a lot about him. purk said his family had

here's josh mankiewicz with "along came jodi. " >> mr. alexander was dead. you worried about that, right? >> yes. >> it would be you that did it, correct? >> yes. >> the jodi arias trial never played as a murder mystery. jodi, after all, had admitted to 12 jurors in open court and a few million viewers on tv, that she was the one who shot, stabbed, and then stabbed some more her former boyfriend and secret sex partner. >> as to count one, first degree murder, guilty. >> why, then, did so many millions of trial followers stick around for the final act? [cheers] and why did so many leave home and work to gather on the courthouse steps to await the final verdict? we'll take an in-depth look at the case, into why jodi arias became so obsessed with travis alexander, and so many of you became obsessed with this trial. >> hello. >> we start with this home video, played for the jury. it shows travis holding court amid a circle of friends. look a little closer and you'll see a blond tenderly nestled in his lap. that's jodi, in much happier times, when she and travis

here's josh mankiewicz with "a sister's search." >> in the movies and on tv, people can disappear without a trace leaving family and friends with nothing more than memories and worry. in real life, vanishing is more a magician's trick than an everyday occurrence. which brings us to that cross roads where magic and entertainment collide. hollywood. the cops who roll down these streets call it holly weird because they know anything can happen here and sometimes what does happen makes no sense. hollywood is a real place but it is also a myth. and the fantasy of what might be has always drawn the hopeful from every town in the america with a bus station. for quite different reasons, it drew these two sisters, lesley and aasha. may be you recognize aasha davis. she's one of the few for whom the hollywood fantasy came true. within a few years of their move west, her star was rising. in 2007 she caught her big break on "friday night lights. " she was cast as waverly. the sharp as a tack preacher's daughter. just as aasha's career was taking off, a real life drama began. one that would test her s

here's josh mankiewicz with "under a halloween moon." >> it's the one time when everyone pretends to be someone else. when being two-faced is part of the deal. >> there's a feeling that maybe the rules don't apply. and that during those moonlit hours, we all have license to eat, drink and be scary. >> halloween morphed from our national salute to sugar, into a coast to coast alcohol party. nowhere is that more true than in north dakota. several lives would collide under that halloween moon. at least one person may have used a costume to try and hide his true identity, a murderer. that weekend before halloween here in grand forks, heather eastling and her boyfriend, joel lovelien, were putting on costumes getting ready to go out. >> it was a nice night with friends. >> he's dressed up as a hockey fan wearing his favorite green jersey. >> i dressed in a mechanic's outfit. a friend of mine texted me and said meet us at the broken drum. >> half casino, half bar. heather and joel had a lot to celebrate. she had just moved here from texas after dating long distance. it was nearly love at f

back to hear josh mankiewicz with "out of the darkness". >> michael berke might have been working his this, something about chacey poynter's story did not ring true. >> she gives a shadowy figure wearing dark clothing. shoots her husband and runs away. >> shadowy figure, waiting out there in the dark, on this remote road? >> correct. didn't make a lot of sense. >> burke didn't challenge her right away. he wanted to know more about the bumpy road that was chacey and bob's marriage. she'd already told police she and bob had problems. to burke, she will build much more. >> if i got random bruises from robert. it could just be him grabbing me. he's done it to me for seven years. >> she is describing a marriage full of domestic abuse? >> yes. >> and violence. >> yes, she made comments that he had thrown her up against the wall. >> the rest of her story was by now as familiar as a summer rerun. a planned meeting at jack-in-the-box. her jeep getting stuck. and then chacey hearing but not seeing the shot that killed bob. >> i put the jeep in park and then i touched his face, and i yelled his

here's josh mankiewicz with "deadly detour. " >> all they wanted was to get home. turning off the interstate. to escape the crawling atlanta traffic. >> he says, girls, this is the wrong place, we don't need to be here, this was a bad idea. >> it's still hard to math tom fathom what happened next or why. >> i was trying to figure out where the explosion was. >> but here's what's pretty clear. one wrong turn really can destroy your life. >> to think that one moment in time you have an accident and you lose everything after that. >> our story begins and ends with her, diane mciver. nobody knows her better than dani jo. >> she's beautiful, she's funny, she was brilliant. she was driven. >> diane was born in auburn, alabama, where she survived a sad and difficult childhood. she realized her dreams in atlanta, a place that matched her ambition. >> what was she looking for? >> she was looking for success. >> diane was barely out of high school when she went to work at u. s. enterprises, a company in atlanta. she was a bookkeeper, but soon caught the eye of her boss, bill