here's josh mankiewicz with "lauren's promise". ♪ ♪ ♪ >> graduation at the university of utah inn salthome 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 the coll

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 uniondale 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 bee

here's josh mankiewicz with what happened to amy? >> you see here, these are all boxes of leaves. and they're all numbered. so, the first lead we ever got in this case. down over past over 10,000 leads. >> so, these have all been checked out? >> they've all been checked out. >> mark spencer is a patrol office in bay village, ohio when amy mihaljevic disappeared. he worked the case for decades, along with a team of investigators including detective jay elish, an fbi agent torsney. i know it kind of goes against your creek to be opening up the evidence locker and showing pieces of evidence to reporters. >> we feel that the benefit would be to show people what we have and what we are looking for. >> you're willing to listen to anybody about anything involving things they remember from back then. >> there's a lot of evidence, there's a lot of good work been done. but these things always involve one missing piece of the puzzle. if somebody could bring that to us, even now, we were happy to get it, and we want it. >> it is a piece they hav

back to hear josh mankiewicz with "out of the darkness". >> michael berke might have been working hisicide, but he already knew 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 h

here is josh mankiewicz with the house! >> a young man walks towards his house in the middle of the evening. he is wearing a gopro camera and to do that. now if it sounds strange for someone to start recording a video of their own actions, we'll stay tuned. this is actually one of the less weird things that you will hear about. what happens next was nothing short of terrifying. >> call 9-1-1! >> what's going on? >> what he found that night would spark an investigation and a mystery that would only deepen overtime. it's all linked to the drama that began just hours earlier. when a daughter could not find her father. >> scott horn was not the kind of dad to disappear. he spent 23 years as an fbi special agent. even in retirement, he still scheduled his life like clockwork. >> if he did something, he would normally do that same thing every single day at the same time. he never slept in either, he was up every morning at 7:30. >> scott's daughter kelly was living on her own by age 80. even so, she remembers her dad started each

here is josh mankiewicz. >> pasadena, california. april 2013. it was close to 2 am.ic banging, banging. >> it grew louder. >> at first some thinking maybe it is the police, maybe somebody is trying to break in. >> somebody was pounding on their front door. david got up to see who it was. >> and then we just hear, uncle david! >> and i am like, who is that? >> remember the desperate woman at the start of our story? that was lajoya mccoy. standing at her aunt and uncle stores step half naked and terrified. >> i immediately see the way that she was dressed and crying. it had to do with him. >> him, making jose roberto turner. david pulled his niece inside as she wept. >> i have never in my life, seen her that way. and for her to come to what she did on me. i have a wall that is three feet tall in front of the apartment building. and then it has cast iron rods with points in the tip. she jumped over that. to get to my place. to get away from him. >> she said that she and josÉ was arguing, when he suddenly turned violent. >> she said i just came out and he just flipped ou

josh mankiewicz in hollywood goes behind the camera. ♪ >> we're going out incognito. >> doesn't therae gay, ma'am? >> yes. >> reporter: there is the playful princess, the restrained ruler. >> i am protecting the constitution. i am protecting democracy. >> reporter: and the queen with a quick and biting wit. >> you obviously know my job better than i am. >> well, you are my tenth prime minister, mr. blair. >> reporter: for seven decades, the queen was the face of great britain. but that face betrayed little, making her an ideal canvas for actresses playing her on the screen both big and small. >> you know, she's such a great subject for filmmakers and television directors because what they've got is a blank slate waving to the public. >> reporter: ella taylor is a long-time film critic and an adjunct professor at the uc school of cinematic arts. >> she gave away nothing of her real personality. in life, i don't think any of us knows anything about the queen. her job was to follow protocol in public, and that's an absolutely bonanza, because they can just go nuts with it. >> there. grie