at the door. >> i just started sobbing. democratic iowa caucuses, the first vote of the 2020 >> they had found her daughter. presidential election cycle. now back to "dateline." but not the boy she was with. it was as though he'd never existed. >> we couldn't find anything about l.j. >> months went by. still no trace of l.j. and then a rookie took the case. annie kasprzak had had a rough childhood. >> how did you feel about it she was passed along from foster home to foster home before she that this was now going to be your case? was adopted by her case worker, >> i didn't know if i was veronica. capable of doing this. i cried for two hours. annie's life finally seemed to >> a teen found dead. be turning around. >> we still don't have an answer. >> a mysterious missing suspect. then in 2012, annie, just 15, was found murdered, her body >> she said that l.j. has killed floating in the jordan river. someone before. >> and hers to solve. >> i get the feeling, >> there was never a second that jacqueline, you're learning how to become a detective as you go. >> this is the case that taught me. >> you have no surefire way to your mind didn't go to, this is keep your children safe. not what was supposed to happen. >> an eyewitness said she saw daniel ferry assault a girl the night annie was killed. >> veronica is a determined woman. >> did someone say you can't save them all to you? >> my mother is probably the one that would say and still says that witness also said the girl had shown up with l.j., whom that. but yeah. i heard that a lot. police could never find. but in the course of their investigation of ferry, detectives learned something interesting. and you had another l.j. in that crowd, didn't you? >> she rarely listened, though. >> yeah. >> daniel ferry? the desire to do good, to save a child, was too strong. >> yeah. >> what was his nickname? >> he used two. one was joker and the other was though sometimes in the quiet little joe. hours, she wonders if she did >> little joe. the right thing. >> if i wouldn't have picked l.j.? >> yeah. that house, if i would have not taken a shower, if i would have >> maybe their witness was confused or deliberately hiding the fact that ferry and l.j. were one and the same. either way ferry seemed like their man. but the d.a. wanted more done something else, she evidence before filing charges. wouldn't have been in that derek johnson and chad carpenter situation. >> of course, no one could have known then that it would end up thought the blood samples taken like this. from daniel ferry's home would >> union need police department. push the case over the finish >> i need to report a runaway. line. you and derek have to think you're done there, you got it? my daughter is missing. >> her daughter was annie grace >> a lot of our investigators thought that we had it nailed. kasper >> while they waited for the kasperzack. blood results to come back from although when veranda met her, the lab, they went searching for she wasn't a kasperzack at all. the carpet that had been ripped out from the ferry home, the carpet joanna had said the girl had bled on. >> we sent investigators to the landfill here in salt lake she w >> she'd been through abuse, she had a hard time trusting other county, and all of the carpet people. >> 2005, veronica was a case that had been brought in from all the different places had been piled together. worker for university's division of children and family services. so our investigators went through each piece of carpet. her job was to find homes for kids who no longer had one. >> that's a nasty job? >> that was terrible. annie was one of those kids. we actually burned our clothes >> annie has kind of a larger afterwards because we were walking in all this stuff. than life personality. whatever annie does, she never >> they found a couple of carpet scraps but no way to did small. prove they came from ferry's house. if there was something she making those blood samples liked, it was huge. they'd taken from the wall even >> drama came with it, huh? more critical. >> oh, yes. it was weeks later when they oh, yes. >> veronica tried for years to heard back from the lab. find annie a stable home. and then the bloodwork comes back and oops? but after annie had been flung >> bloodwork came back, and it was negative for blood. back to the state nine times, >> not only were the veronica -- young, naive, and samples not annie's blood, it wasn't even blood at all. stubborn -- made a surprising a major blow to the investigation. decision. to adopt annie. didn't mean he's not good for did your superiors tell you, we the crime? >> it doesn't mean that he's not don't do that, veronica? good for the crime. >> oh, yes. >> don't cross that line? it just led us to believe that, >> uh-huh. >> you have a professional okay, it didn't happen here, at the ferry residence. relationship with this child, but don't bring her into your home? >> so ferry might be >> well, and that was very true. good for this thing, but boy, and because at the time i also you're just not getting there? >> yeah. happened to be about six months >> the only bright spot, pregnant. and so i'm sure the thought was, daniel ferry wasn't getting out okay, crazy pregnant lady, she of jail. he was also being investigated for an unrelated kidnapping and doesn't know what she's doing. assault case in a neighboring but it was very much, are you town. so he's on ice while you guys sure? you can't save everybody. can develop your theories about >> but veronica was determined his involvement in this thing? >> yeah. to try. she and her then husband dennis >> they continued to investigate ferry. adopted 10-year-old annie in months went by. lead detective derek johnson was january 2007. promoted to sergeant. annie, who had bounced around from house to house, finally had a home, parents, and brothers which meant jaclyn moore's dream who adored her. of making detective finally came >> she was the immediate cool true. big sister. maybe a case of beware what you she liked being the oldest, wish for. one of her first assignments was being in charge, teaching them the annie kasprzak murder. how did you feel about it? that this was now going to be all of this cool stuff. your case? >> she was wanted, happy, making >> i cried for two hours. memories. opening gifts on christmas >> reporter: really? morning. her first trip to the beach. not that everything was perfect, mind you. >> there was still definitely a, i'm going to test you as much as you say you love me and you're >> reporter: jaclyn decided she needed to start again from the keeping me, i'm going to make -- beginning, following the chain of evidence that led her i don't believe you. colleagues to daniel ferry. >> how would she challenge you, she thought she might link ferry to annie through his phone for instance? >> just the quintessential, i'm not going to do what you say, calls. i'm going to do whatever i want. but when she checked -- >> all of his cell phone records showed he was in the middle to >> a psychological tussle going northern part of salt lake county. on there? >> uh-huh. he had never gone south close enough to where annie was killed. >> which only intensified when not even near her house. annie entered her teen years. >> and she well knew the physical evidence wasn't there either. >> none of the dna came back >> she was about as boy crazy as saying annie was ever a friend i could imagine. or ever at his house. she always had a boy that she liked or that liked her. >> detectives had never found and it was never a, here, let me enough evidence to make a murder charge stick. see. it's, oh, i'm so in love with you, this is forever, i couldn't and it turned out, there was an explanation. remember, while under suspicion imagine anybody being more for annie's murder, ferry was arrested for an unrelated amazing. she was very all-in. kidnapping in a different town. >> but annie was also into her the charge stuck. ferry eventually pleaded guilty and was sent to prison. education and her future. she wanted to be a therapist, just like veronica. draper police came to believe it was this kidnapping that star she even wanted her new family witness joanna had recounted to to adopt more kids. them. she had seen a totally different >> what about this other girl, crime. mom? she's there, she's really having not annie's murder. a hard time, i think we should bring her home. what's more, it happened on the >> she was really becoming your same night annie was killed. daughter in a way, huh? no way daniel ferry could have >> veronica eventually divorced committed both crimes. and remarried. she and her new husband, james, so now rookie detective settled here in riverton, utah, jaclyn moore went back to the boxes and binders piled high on a quiet suburb of salt lake her desk. city. >> i felt lost. annie had james wrapped around i decided i need to start from her finger. the beginning and see what information derek had when he first got the case. >> i took her with me to help me pick out her mother's environments day gift. >> and so began the education of there was a shoe store right a detective. across the way. she started reading through she had a way with me, she could pages and pages of annie's notes talk me into just about and journal entries. anything. one of them was her favorite who does annie turn out to be, shoes she found, she was so the more you learn about her? >> she's very lost. excited about them. they were a red pair of shoes. >> a few weeks later, march she wants to be loved by anyone and everyone. 10th, 2012, annie, now 15, was watching her brothers while >> and jaclyn saw that there was veronica and james went out for one person in particular annie dinner. >> then when we came home, wanted to be loved by. everything seemed the same. chris bagshaw. i mean, annie had changed from his name was scribbled all over run around the house in shorts her journals. to jeans. veronica remembered annie gushing about him. and i just kind of chalked that >> she liked him. he was different. up to, okay, she's gotten cold. i had a massive headache i he had enough of the bad boy couldn't get rid of, so i went going on that he wasn't a goody to take a shower. annie had gone downstairs to her two shoes, so she didn't feel room to listen to music. we just figured it was another like he looked down on her. saturday. >> but it wasn't. when veronica finished her >> annie's diaries revealed something else, too. shower, annie was gone. >> she and chris had sex. james searched her bedroom. >> chris was the boy annie had >> the note was tucked slept with just months before underneath her blanket. and i grabbed it. and it just said, i'm sorry, i her death, after, which remember, she lied about being pregnant. >> i am starting to think that she made up the pregnancy to haven't been totally honest with keep chris around because he you. >> annie, it turned out, w i tos didn't want to be with her anymore. >> next, jaclyn pored over annie and chris' phone records from the night of the murder. not only was chris the last person annie spoke to, but the p. pattern of their calls spoke volumes. p.? for the word no parent >> 30 seconds here and then it hangs up. immediately one of them calls the other back. wanted to hear, pregnant. sometimes the call is ignored. a few months earlier they learned any had had sex for the sometimes chris' phone is blocked. first time. >> she'd had sex. to annie, she assumed i could be >> what do you think is going on? >> it looks like a fight. pregnant or i am pregnant. it looks like they're yelling at >> but the pregnancy test was each other and hanging up on each other. negative ask, annie was now on >> chris had no criminal record birth control. why would she lie about being and no eyewitness put him at the scene. p.? even more alarming was where and there was still the annie said she was going. by the time you read this note, mysterious l.j., annie's reported boyfriend whom police i'll be on my way to california. could never find. please don't try and look for me not in any police database, not anywhere. because i don't want to be that is, until jaclyn knocked on one more door. found. >> the first thing we did is we called the police. and then the second person i >> hey. >> how's it going? >> hi. called was chris. are you jack? >> yes. >> 14-year-old chris bagshaw. >> i'm detective moore. this is detective johnson. annie had brought him over to >> her close buddy and the house a few times. >> he was kind of quiet. predecessor, derek johnson, was by her side when she went to i kind of took it as the, all interview annie's friend jackson. right, i'm here with my girlfrie they don't kill me, he told them the same story that they'd been hearing all along, annie telling friends she was so. >> was he in and out of the pregnant. picture for her as the boyfriend nothing new. of the moment? but then they asked jackson if >> uh-huh. >> his stock would rise and fall? he knew who l.j. was. >> yep, she was crazy about him. his answer floored them. >> she would always referred to >> chris told verronica he didnt know where annie was, but he had this guy as l.j., and i asked her, well, what's his real name? significant physical. she said chris. she was running away with a guy named l.j. >> we were shocked. coming up -- a stunning because we didn't know all of revelation. her friends, because they was l.j., all along, just changed a lot depending on who annie's nickname for chris bagshaw? she was hanging out with at the moment. but it wasn't familiar at all. and a death on the road puts >> a police officer came and took a report. james, meanwhile, called up the jaclyn's case in jeopardy. gps function on annie's cell >> i lost any information i needed on that case. phone. oh, i... i didn't know. >> it put her around the golf course around riverton, within a you didn't see the sign? mile of that, around the bridge that... that wasn't there when i was here earlier. area. >> the bridge at the jordan (whimper) really? river, just a couple of miles from their home, a place jogger, you know, in italy, they let you park anywhere. horseback riders, frequent during the day, and young lovers have a good day, sir. at night. with geico, the savings keep on going. james, veronica, and the officer just like this sequel. watched as annie's phone pinged 15 minutes could save you 15% or more across the computer screen in realtime. >> you're watching her move? on car insurance. (glass shattering) >> yes. (frustrated yell) >> it moved so fast. our immediate assumption was, (car horn blast) (yelp) okay, she's getting in a car. try eucerin advanced dry srepair lotion. >> so this is a hot pursuit, looking for your girl. >> yep. >> then the signal just stopped. it helps stop dryness from recurring by going beyond ceramides veronica drove to a walmart near with natural moisturizing factors found in skin where they tracked annie's phone. >> and i have her picture on my eucerin advanced repair lotion cell phone, and i'm showing to it the people that are sitting for healthier looking skin. at the front, the greeders, going, have you seen this girl? >> are you collected or are you skip to the good part with alka-seltzer plus. a wreck while all this is going on? >> i am -- frantic. now with 25% more concentrated power. nothing works faster for powerful cold relief. >> veronica went back home. oh, what a relief it is! so fast! she and james watched the front door. and they kept calling annie, but that's unnecessarily complicated. make ice. her phone went straight to voice mail. making ice. >> in the best of worlds she's out with some young boyfriend but you're not because you have e*trade you may or may not know, off on which isn't complicated. a lark of some kind, but it will their tools make trading quicker and simpler come to an end and you'll get so you can take on the markets with confidence. her back and regroup. don't get mad get e*trade. >> yeah, our worst-case scenario at that point is, okay, she's so you can take on the markets with confidence. going to come home pregnant. ♪all strength, we ain't stoppin' believe me♪ >> worst-case scenario? ♪go straight till the morning look like we♪ not even close. coming up -- ♪won't wait, we're taking everything we wanted we can do it♪ >> he had told us that l.j. had driven by the house, threatening ♪all strength, no sweat chris. >> and a jogger makes a grim discovery. >> 911, what is the emergency? >> river bottom, there's blood. >> when "the girl with the red shoes" continues. (worried) i'm not picking it up. you pick it up! i'm not picking it up! i'll pick it up! they're clean! 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