here is josh mankiewicz with unraveled. >> there is an argument. >> for an agonizing stretch of nearlydays, the fear was palpable and paralyzing. >> the twist and turn stone and there. >> a killer was on the loose, in and around phoenix, arizona. systematically, shooting innocent victims. >> a massive manhunt underway. >> police worked around the clock, desperate for leads. >> we are asking the public to remain vigilant. >> a long weekend of terror that would lead to a hard question -- did any of it have to happen? because this was a tragedy many people saw coming. including the first and most high-profile victim. >> he was like nobody else might ever met, and that's true to this day. >> back in 2002, natalie collins was a young lawyer defending a medical malpractice case when she met a forensic psychiatrist named dr. stephen pitt. >> it is a very intellectually honest whether you wanted his opinion or not, you've got it. but he was formidable and he was fair. >> it was nationally known for his work on cases like the column line massacre and the murder of johnny ramsey. his interest in

here's josh mankiewicz with "deadly exchange." >> reporter: it's a dilemma that confronts every teenager. how to simultaneously fit in with your friends and rebel against everyone else. that two-step is made a little easier by the knowledge, maybe the certainty, that you're going to live forever. >> kids do dumb stuff all the time. >> reporter: and so sneaking out of the house in the dead of night to meet other teenagers to drink, party or just hang out well, that's nothing new. usually teens sneak back home safely. this wasn't one of those times. >> i thought it was some kind of, like, joke. i just couldn't believe it, really. >> i was just freaking out. like, it can't be. it can't be. >> reporter: it was april 2014 when two bright foreign exchange students living in montana, slipped out of their home. >> he's lying face down. he's barely breathing. >> reporter: just minutes later, their amazing american adventure came to a sudden and tragic end. >> where is he bleeding from? >> everywhere. >> it was horrific. >> no one ever knew that someone would die over it, you know? >> it was just

once again, josh mankiewicz. >> only baseline jumper. he hits it with five.ter the one-time hometown hero named tom foley made coldwater history, and now convicted murderer of the same name sat behind bars awaiting his sentence. are you >> already spend the rest of your life in prison? >> no, absolutely not. >> to tom foley's attorney tom, and his private eye, the guilty verdict landed like a crushing blow. >> this is a grassroot who done it. and we thought we had shown that it was in this person who had done it. >> i was devastated. i could've walked into a wall. >> but just one day after tom foley's conviction, a woman stepped forward. she had new information that suddenly gave new life to tom's defense. >> she came forward and said, i saw this white car storming out of the driveway, almost hit me. it looked like somebody was either high or running away from something. >> the woman with certain the driver was coming out of the heath borough farm, right around the time dar was murdered. and she was equally certain the driver looked nothing like tom foley. >>

here's josh mankiewicz with betrayal of trust. >> southern california's south bay. a singularly stunning stretch of shoreline with familiar names like hermosa, redondo and manhattan. >> we call it the sandbox. no one thinks that this part of los angeles exists, but it does. >> this seaside playground is lined with beach front property worth millions. and nestled among these small beach towns is an oasis called, el segundo. >> its main street, usa. >> it's a great place to raise kids. >> and in 2003, one of the rain makers of the real estate business, selling those beautiful hones in el segundo and the south bay was a woman named julia keller, known as "deede". >> she really just embraced everyone that came into her path. >> deede's best friends mortgage executive cindy ertman and real estate saleswoman linda dondero. she was doing her job? >> i love working with the. >> everybody. did >> she was just so easy to like and wanted the best for everybody. and her clients were very loyal over the. yours >> deede was loyal to. not only to our clients but as a divorce mom t

here is josh mankiewicz with the conclusion of jacket. >> major nick katsopolis and his team worked overtimeanswer a bankers box full of questions. starting with, what happened to heather immediately after she left whirlpool? information from cell towers in and around cell dusky county provided little help, but what about satellite information? >> if your cellular devices communicating with the gps satellite it will continue to do that once in a while. in this particular case, heather bogle's phone did communicate with the satellite. >> it was one of the many avenues shawn o'connell had not tried previously. >> we were able to retrieve that data through a search warrant that we served on google. >> that data was madam from heaven. it pinpointed the location of heather's phone with far greater position than a cell tower ever could. >> it puts her phone very close to a trailer, in the trailer park. >> to within just a few feet of the trailers front door. >> and who lives? they're >> daniel myers. >> that name come up in the investigation? before >> now to our knowledge at that point. >> sudden

here is josh mankiewicz. ♪ ♪ ♪ >> this is the sheriff's office. >> my wife made a phone call to me ae ago. to say that she is held by gunpoint. >> businessman gray was on the line with the sheriff's office in a panic. he told the 9-1-1 operator, his wife phantom minutes earlier to say she'd been kidnapped. >> it sounds like a movie, but it's not. >> the kabul turnout to be just the beginning of an unbelievable saga that would baffle investigators and turning this husband's life upside down. the next few days would bring one setback after another. and no one could have predicted how it all would come to an end. it was around 5 pm, september 4th, 2009, reads wife queen had called him at work and told him achieved just been kidnapped out of their 4 million-dollar home. reid couldn't believe he'd heard. he went to his office parking lot to try anything straight. >> did she tell you where she was at? >> no. there is a note at the house with the gunman's demands. >> the news was as shocking as it was terrifying. quinn, a mom of two young daughters, was a trained nurse who is now raising he