♪ crime stories have fascinated human beings since cain and abel. i've spent a lifetime exploring the edges of evil, exploring why people do what they do. i'm scott turow. as a criminal lawyer, i have seen the worst of humankind. as a bestselling novelist, i have probed the underbelly of human existence. and i've written books that have sold millions of copies. but the story of this case still has to be written. >> 18-year-old angie dodge was raped and murdered. >> a jury convicted him of

first-degree murder and rain. >> sometimes true crime is more unthinkable than anything i have ever imagined. >> i don't know what the hell you guys want. i wasn't there! >> for 13 years i believed chris tapp was part of my daughter's killing. >> this is not just a regular case. it's woven in the fabric of every ifpd guy's career that's here. >> target vehicle, keep an eye on it. >> there is one person that killed my daughter. >> he is going to be coming out. >> these are the stories that keep me up at night, the cases that are truly stranger than fiction. >> idaho falls is a really nice little western town. it's a good place to live, good place to raise a family. >> it's a city of about 65,000 and right on the snake

river. >> we have a beautiful waterfall that is probably a quarter of a mile long and it's kind of a big attraction in town. >> the idaho falls temple is right in the center of town. it's sort of the center of spiritual life for a lot of the mormon community in the area. >> a lot of these people around here will give you the shirt off their back. idaho falls is a very safe place to live. we don't have a lot of murder. >> 18-year-old angie dodge was raped and murdered. >> someone had raped and killed her. >> angie's throat was cut. >> in her idaho falls apartment. >> this call came over the radio that a body was found. and suspicious. >> suspicious death. i want you to come and process

this crime scene. >> i'd probably been on patrol for a couple of months. very green. you can actually see me on that original news footage. it was my first homicide. >> they cautioned me that it was a pretty graphic and violent scene. a lot of blood. and then they pointed me toward the front door. i took photographs to show my approach. i get to the top of the stairs and i continue to photograph. so, i enter into the largest bedroom, and that's where i was able to see the victim. >> she's laying on the floor on her back, next to a mattress. >> her sweatpants were pulled down just above knee level. >> her clothes are kind of disheveled. >> she had had a shirt on that was slightly lifted up and it was exposing one of the cut marks on one of her breasts.

>> i can see that she has some extensive lacerations or incisions, stab wounds. and there is a horrific wound to the throat. >> there was a lot of blood. there were some blood marks on the wall. >> and then off to the -- to my right, there was a laundry basket with some stuffed animals. it was probably the worst case i've ever seen. it's a nightmare. >> when you have a child that's murdered, life just gets shattered. and there's no way to put the pieces back together. >> angie was an 18-year-old girl. she had gotten out of high school just recently. she was looking into going to idaho state university.

>> angie, she was a loud, outgoing person. if she had something to say, she said it. >> angie's car was called the boat, and she would stick her foot out the window while she was driving. it was quite the sight. it was fun. >> angie was the youngest of four children. >> she was my -- not only my baby, but she was my only daughter. she was extremely intelligent. she didn't take no for an answer. >> angie had moved into an upstairs apartment in this house three weeks before being murdered there. >> the house was a two story, single-family dwelling converted into apartments. >> it's an older neighborhood in idaho falls. it had seen better days.

>> the police gathered dna at the crime scene. >> the semen that we could see clearly all over the victim. >> and skin cells under her fingernails. >> we found one hair that was obviously different. one that we believe it was a pubic hair. >> some blood sampling, obviously. >> the killer absolutely left his calling card there. >> this was my only daughter. and i hope you come forward and make it easy on everyone. >> almost every person that they brought in for an interview, they asked them for dna. >> we're interviewing all family members, associates, friends of hers. >> we collected over a hundred different dna samples, and there wasn't any matches. >> ultimately it's six months,

and there's still no killer arrested. when you have a crime like this -- violent, horrible -- it fills everybody in the community with anxiety. the police feel that pressure to get that crime quickly solved. >> and then a friend of hers was arrested in nevada for raping a woman at knifepoint. >> much like the similar circumstances that had happened in angie's murder. >> police take immediate action on this new information, but it's going to be a lead that ends up destroying innocent lives. [music: “forever young”] ♪let's dance in style, let's dance for a while♪ ♪heaven can wait we're only watching the skies♪ ♪hoping for the best but expecting the worst♪

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the community was really shaken by this murder. >> 18-year old angie dodge was raped and murdered. >> someone had raped and killed her. >> like a lot of small towns in the united states, idaho falls is a place where crime, especially violent crime like the murder of angie dodge, is a relative rarity. >> there was no obvious way of knowing who did it. was it somebody i'm meeting at the store? ♪ always searching ♪

♪ never finding ♪ >> who in their right mind would want to kill someone so pleasant, someone so joyful, perfect for life. >> if i hadn't had the opportunity to tell her how much i love her, i don't know that i could have made it. it's what kept me determined to find out why my daughter was killed. >> she wanted to know who did it, and just like i would or any other parent would. >> where dna has been left behind, the expectation is that crime is going to be quickly solved. >> they spent months trying to solve this case, and they're getting nowhere. ♪ will i ever know the word ♪ >> a frightened public demanding results in the aftermath of a ghastly crime also places predictable pressures on police, which can sometimes lead to questionable conduct.

>> seven months after the murder, police get a tip. >> a friend of angie dodge named benjamin hobbs was arrested in nevada for raping a woman at knifepoint. >> much like the similar circumstances that had happened at angie's murder. >> it's not unreasonable for the cops to say, this is a hot lead. this is probably our guy. ben hobbs is the guy who killed angie dodge. >> he was a very strong suspect. >> ben hobbs is not simply somebody who knew angie dodge, but he was actually in the funeral party, carrying flowers. it's not unusual for a killer who takes a certain amount of pleasure in the crime to be at the funeral. so this seems to be another telltale sign that maybe ben hobbs is the right guy. >> the policdrivwn ty, nevada. to interview ben hobbs about the

murder. >> ben hobbs becomes their number 1 suspect. >> i had nothing to do with the murder of angie dodge. was she raped the night she was killed? >> you tell me, was she raped? >> i don't know. that's why i'm asking you, because if she was my dna will prove my innocence right there. >> the police get his dna. they go back to idaho falls, and begin looking at ben hobbs' circle of friends. >> there was a very large group of friends. they sometimes called themselves the river rats because they hung out at the snake river. >> the river boat docks was a hangout for a lot of different groups of people, and angie was a social butterfly, so she would be in all the groups. >> we all were dorks back in the day. you know, we all had good times playing hooky bobbin and water fights. >> they bring in chris tapp who

was a close friend of ben hobbs. >> chris had been a high school dropout for a couple of years. he's couch surfing from place to place. he smokes weed a lot, doesn't really work a lot. >> i appreciate you coming down. want to pick your brain for a bit. >> they started asking chris about ben hobbs. >> what about ben? >> i don't know. if i knew i'd tell you. >> one of the lead detectives, before he was a detective, was a school resource officer for the high school that chris tapp was going to. >> so chris trusts him. >> you know me. i'm not going to screw with you. i think you can trust me. >> chris tapp was brought in a number of times for different interviews and polygraph examinations. >> i wasn't there. i know i wasn't. >> chris gets an attorney. >> he denies any role in the crime. >> i wasn't there. i wasn't even [ bleep ] downstairs.

i was nowhere around. >> police begin a series of interrogations and polygraphs that will last for nearly 60 hours. >> you're screwing with me now. >> and then he begins to change his story. >> impression i got from you is you're like downstairs waiting for him. >> maybe i was there. i don't know. >> now the police have reason to be suspicious. >> there's a saying in the law -- false in one thing, false in all. somebody who's changing his story is hiding something even bigger. >> you're in the apartment. who's with you? >> ben. >> chris tapp disclosed that he and ben hobbs were involved. >> but neither hobbs nor tapps' dna profile matched the codis profile. >> hbo hobbs' dna doesn't match, and his dna doesn't match, so they're looking for a third person. >> a mysterious third person who

must have been the person who sexually violated angie dodge. >> there's definitely another person involved that you have not told us about. the evidence has borne that out. >> who's the third person? >> tell me the other person who was there so we get it cleared up. >> maybe jer was. >> was sargis there or not? >> to my recollection, yes. >> chris ultimately named his friend jeremy sargis as the third man. >> when chris named me as a suspect, i was furious, livid, irate. >> you're wasting your time. you're barking up the wrong three. you're making a fool out of yourself, you really are. >> excuse me? i'm making a fool out of myself? >> yeah, because i didn't do [ bleep ] i know. >> i'm making a fool out of myself? >> i think you had better stand up and look in the flipping mirror, bub. >> the first thing in the miranda rights, you have the right to remain silent. seems like it's pretty important. you just shut your mouth. >> jeremy sargis's dna also comes back as not being the person who killed angie dodge. and he has an alibi. >> police drop jeremy as a

suspect. >> now we're finding out that sargis probably wasn't there and that you were screwing with us. >> i'm not screwing with you. >> to watch the evolution of what chris tapp says from one session to the next is really disturbing. >> i wasn't there. i mean, maybe i was there. i know i'm there. >> how many times did you cut her? >> just once. >> he ultimately says, i'm the guy that cut her on the breast. >> the cut you made was across the breast? >> yes. >> they can't pin this crime on hobbs, nor sargis. but they now have a confession from chris tapp. >> in february of 1997, chris tapp was charged with the rape and murder of angie dodge. >> he was taken into custody. >> the day they took my baby's life, they took my life. there will be justice. >> but there's still a major gap in their case. >> they still don't know who the mystery man is who left the dna at the crime scene. ♪ will i ever know the truth ♪

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♪ to have a loved one murdered is a unique loss. another human being made an intentional decision to kill this person you adore. >> as this trial begins, it's just certainly unlike anything in the life of a small town. there's palpable tension on both sides. everybody is on high alert to find out the ultimate question, did he do it? >> on february 3, 1997, chris tapp is charged with first

degree murder with an enhancement for using a deadly weapon and rape. >> chris confessed to being at the scene with ben hobbs and this other person. >> ben hobbs is never charged because he didn't confess to the crime and his dna didn't match. >> it's not jeremy sargis' dna either. >> chris tapp was the only one left holding the bag. >> there will be justice, and going into the trial is reliving it. the horror. it's -- it's awful. >> carol was there. she went to the trial every day. she was a very visible presence. >> carol dodge wanted him to pay. she wanted the death penalty. she wanted chris tapp to suffer the way her daughter had. >> the jury saw him confessing to doing it, to participating in the crime. >> how many times did you cut her?

>> just once. >> she say anything? >> "help." >> chris' defense lawyer saw that there were problems with his confession, but the prosecution was successful in countering his claims. >> the argument is simple -- innocent people don't confess to crimes they didn't commit. closed case. so even though someone else left his dna on angie, the jury finds chris guilty as an accomplice. >> we, the jury, for our verdict unanimously find him guilty. >> when the jury verdict came down, it was just sadness, pure sadness. i couldn't believe i was going away. i couldn't believe i was going to prison. >> i completely believe that what the police did was improper. i think the questioning was entirely suggestive, and i thin

down a path. >> we couldn't have done it without you. >> when chris was found guilty, all of us friends wanted the death penalty for him. we felt that he should be taken care of like he did to our friend. >> can you stand up? >> i am not the monster that everyone thinks i am. judge, i ask you to spare my life. thank you. >> how dare he ask to spare his life when angie begged for hers? how dare he? how dare he? >> the judge ultimately opted against the death penalty. he gave him 30 years to life. >> there were a number of issues that were raised during the

trial, and i believe there will be an appeal. >> tapp, do you have any questions about the sentence i just imposed? >> merry christmas. >> the family was very upset that he didn't get either the death penalty or life without parole. >> and i came down here, and i did everything i could. doesn't anybody understand what's going on in this town? will anybody wake up? this town needs to wake up! take your blinders off, for hell's sakes. >> even though chris tapp was now in prison, carol wasn't satisfied. there was still the mystery of who left the dna at the crime scene and delivered angie's fatal wounds. >> we still needed to find that other person. >> but nothing happened. nothing came up. no evidence came forward. >> carol dodge is not happy that

her daughter's actual killer has not been identified. so she decides she needs to investigate it herself. >> carol dodge is a force of nature. >> force of nature. >> she's a formidable figure, fierce, determined. >> i don't think carol knows what rest means. >> she wants answers. >> she's cajoling the police saying, come on, you've got to find something. >> i'd go to the police station every day. >> over and over again she would barge into the chief's office. >> and i'd say, what's happening today? ifpd got so tired of me. i'd say, because i'm going out to the streets tonight. i literally went to the streets. i kept going back and forth. i kept reading all of the documents and the different reports that i had accumulated. >> she's driving around late at night, putting her own life at risk. >> somebody pulled a gun on her once. >> she's surveilling people. she's questioning drug dealers. >> i lived out on the streets.

i'd go home 3:00, 4:00 or 5:00 in the morning. >> she followed me a few times. let me know that she knew i had something to do with it and i was going down. it was sad to see her, to see a mom in so much pain. >> she did that for 20 years, basically. >> she is not going to let angie's case go cold. >> the turning point comes when carol decides that she's going to study chris tapp's interrogation tapes, all 60 hours of it. >> she is convinced that she will notice something that the cops never noticed. >> she's looking through them, trying to see if she can find more information about who killed her daughter. >> if i did know about this, i would say. but i do not know. >> and over time -- >> i don't know what the hell you guys want. >> she realizes that he really doesn't know much about the crime. >> where'd he stick her at? >> the living room. >> she was killed in the bedroom. >> chris tapp's not there.

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one of the fixed stars of the universe of criminal justice is the idea that nobody voluntarily confesses to a crime she or he didn't commit. >> i look at angie's case, and for 23 years i have been trying to put this puzzle together. and the center is missing. >> like any good plot twist, carol dodge does something few would expect. >> if i did know anything about this, i would say, but i do not know. >> in 2008, she tracked down chris tapp's new defense lawyer, john thomas. >> one day after court,

carol dodge stops me and i thought, oh, no, this is not going to be good. i'm representing chris tapp. her daughter was brutally murdered. carol told me that i needed to wind chill the video tapes of chris' interrogations and that she thought chris tapp was innocent. >> i don't know what the hell you guys want from me. >> there were nine separate interrogations. >> it was hours and hours of polygraph sessions. >> unless you want to just tell me everything now and -- >> i have been trying to. i wish i could. me in my bright mind, if i help them solve this, then i can become a hero or good guy or whatever it is. >> okay, we're just going to jump right back into it. >> law enforcement claims that chris volunteered statements that indicated he knew about the rape and murder. >> but when john thomas viewed the tapes, he believed that the

police wittingly or unwittingly revealed details of the crime. >> it wasn't just stab once or slice twice. there was a lot of aggression. >> they ask him questions about, okay, well, where did she live? >> didn't she like live on the corner or was it -- >> and they say, no, no, chris. >> it was in the middle of the block. >> they ask him, which room was she killed in? >> where'd he stick her at? in the bedroom, the living room, or the kitchen, or the hall? >> in the living room. >> it was in the living room? >> yeah. >> and they go, no, chris it's over here. >> she was killed in the bedroom. >> however, at chris's trial, the detectives testified that they had evidence that proved chris was lying to them and that chris always knew where angie lived and where she was killed. >> separately, carol dodge along with john thomas reached out to an expert in wrongful convictions to review the

interrogation tapes. >> honestly, i just don't know. >> yes, you do. >> this was the first time that a victim's mother called me and said, i've got real concerns that the man who killed my daughter is innocent. >> drizin created a report that would later be used in chris tapp's appeals. >> you know what an accessory is here? >> it's the polygrapher that suggests to chris he could get the gas chamber for his role in this crime. >> they get life in prison or gas chamber. >> it's clearly the kind of threat that can lead people to give false confessions. >> the innocence project, an advocacy group for the wrongfully convicted, also joined chris tapp's defense team. >> i think that people would be shocked to know that the police can lie to you. the police can say that they have evidence in the case that actually doesn't exist.

>> there's no doubt in my mind right now you were in the apartment. >> although police tactics like these are legal, drizin argued in his report that detectives took them too far. >> in my opinion, the polygrapher wasn't there to test the accuracy of chris tapp's stories on the lie detector. >> on the charts you're telling me -- it's saying to me you were there. >> he was there to tell chris that he failed the lie detector test to get chris to change his story to meet their evolving theory that ben hobbs killed angie dodge and that chris tapp somehow participated in the crime. >> when i first took office in january 2015, the bonneville county prosecutor's ofice began the search for and the hiring of an independent investigator to look into chris tapp's conviction. it became pretty clear that a lot of the information that tapp had was provided to him by law enforcement.

and there were concerns by our investigator regarding statements made by the polygrapher during the polygraph examinations that were coercive in nature. >> however, the independent investigation concluded that tapp was present when angie was attacked and stabbed but casts doubt on his confession regarding his personal involvement in her death. drizin believes that chris looked guilty because of the psychological tactic that he said detectives used. >> i mean, that's my thing -- if i were there, i would remember it, wouldn't i? >> one thing that interrogators often do is they attack a suspect's confidence in their own memory. >> i wasn't there! the way i think you're telling it to me is like i was there. the police told me a few times if there was something that horrific, you would definitely hide it and it'd go in your subconscious. >> it's just like me on some of the brutal stuff that we see out

on the streets. my mind shuts down on me because i don't want to remember it. >> i started second-guessing myself during all this. i started to not believe in myself or who i was. i don't know because right now everything i've been saying, what i think is right in my head, it's been wrong. >> it causes a crisis of confidence in the suspect. the suspect doesn't know whether those memories are real or they are imagined. you can feel the stress on him, and it's really hard to watch. >> you were there. you're the one that held her down. ben asked you to kind of help. is that correct? >> yes, sir. >> i believe this confession was coerced, and in my opinion, with today's sophisticated interrogation techniques, any one of us could find ourselves confessing to a murder we didn't commit. >> did she say anything? >> "help."

>> you heard her say "help"? >> yeah. i just didn't do nothing. i froze. you think you're doing the right thing and you just want to help them. i was so scared, and i just kept trying to do whatever they wanted. i kept trying to answer their questions. i wanted to go home. >> when a jury hears a defendant say, i did it, it's almost as good as a conviction right then and there. it is extraordinarily hard for juries to understand that somebody would confess to a crime that they didn't commit. >> i can say i think without any equivocation that had mr. tapp not confessed, there would have been no conviction in this case. >> at least two of the detectives who were involved claim that they never gave chris any information, that all of the incriminating details that he came up with, he had simply volunteered.

>> how much will he serve before he's eligible for parole? >> it will certainly be at least 30 years so it will be a very, very long time. >> we reached out to the original detectives on this case who have since retired, but they didn't respond. ultimately, the prosecutor issued his own report in 2016. he determined that the statements tapp's attorney said were coerced were similar to statements chris made to acquaintances. >> the question for me was whether there was new, clear and convincing evidence of innocence. there simply was not. >> carol dodge is looking at what the jury never saw. she is seeing the fullness of this interrogation. >> she realized that chris tapp didn't know anything about this crime, that he'd been wrongfully convicted, and that whoever killed her daughter, he was still out there. >> there is one person who killed my daughter. that's what the dna shows.

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there is the old saying

that the truth is stranger than fiction. it is a moral triumph that carol dodge, the murder victim's mother, in her agony and in her grief is still able to see the truth. carol goes from being in a courtroom and wanting the death penalty for chris to being in the courtroom trying to prove his innocence. >> there's not one speck of evidence on angie that belongs to chris tapp. it belongs to one individual, and that individual has never been found. >> she, i would say very heroically, has become the leading voice for chris tapp's release. it's one of those things that i can say, "boy, i wish i wrote that." >> chris has also evolved from suspected murderer to possible victim. he is now a 44-year-old man.

>> life in prison was tough on chris. he was very angry for a lot of years. >> prison life, it changes who you are. the violence and the stuff that you see while you're in there, it changes you. it makes you something that you're not. you lose yourself. and especially for someone in my position, being in there for something you didn't do, and i had such a hatred for that. >> we filed five petitions for post-conviction relief, and they were all always struck down, struck down, struck down. >> we just kept losing. you get hope, and then you lose hope, and then it destroys you, you know, a little bit every time. and it becomes worse. >> 19 years after the murder, there's a new prosecutor in bonneville county.

>> in 2017, the question for me was whether there was new, clear and convincing evidence of innocence. there simply was not. we had concerns about the confession. i had some concerns about the level of sentence as it related to tapp's admitted involvement. >> based on his concerns, he and tapp's defense team agree on a deal. >> the rape charge is completely vacated, so he's no longer a sex offender, but the murder charge would stay in place. we walk out the doors in the front here with our head held high. >> victory! >> victory! >> carol was there, and she was holding my hand. she was happy that i was out. >> it's just a day of celebration. right, chris? >> yes, ma'am. i still have a murder conviction standing right now as we speak. it limits my job opportunities. it limits a lot of things in this world. >> he remains a convicted murderer in the eyes of the community, but he is also a free man.

>> i want the full exoneration. i want to be able to have that conviction expunged. >> ultimately, carol dodge and i decide, hey, we're gonna continue pursuing this. we need to find the killer. if we find the killer, they'll have no choice but to exonerate chris. and for the person who did kill angie dodge, there's a bounty on your head. >> 20 years after angie's murder, all of the main actors in the interrogation of chris tapp, they've all left the police department. new investigators have come on to the case, and they are ready to take a fresh approach to the crime. >> the new group of investigators were not involved with the interrogation of chris tapp. >> i got promoted to captain in october of '17. and i took over the case. we were still trying to search for whoever this person was, but we have just taken every street

to the end, and there's nothing else to follow up on. >> genetic genealogy is pogressing. more and more about the killer can be determined from the dna that was left at the crime scene. and the tireless carol dodge, aware of all this, reaches out to a world renowned genetic genealogist named cece moore, and the idaho falls police also join in this effort. >> we've been exchanging emails, but this will be the first time that we'll ever meet in person. and i look forward to learning more about angie and what happened. this horribly sad case. >> hi! >> cece, cece. >> hi. >> it is so good to meet you. >> nice to meet you, too.

>> i'm excited to see you. really, it's such a pleasure to meet you. >> i can see angie in your face. sorry. >> when you have a child that's murdered, i -- life just gets shattered. and there's no way to put the pieces back together. >> i wanted to hear a little bit about angie, what you could tell me about her. >> she was my -- not only my baby, but she was my only daughter. she really went through some hard times when she was younger, because she was big for her age. >> yeah, was she 5'11" or 6'? >> mm-hmm, mm-hmm. and so she was bullied. and so, when she would see other people being bullied or being messed with, she would get right in the person's face and say,

you leave them alone. >> okay, we're going to turn right here, left. >> man, this is beautiful. look at the light. >> i grew up out here. >> you did, so you're a native? >> yes. my mom and dad were really poor, and my mother raised five girls with no bathroom. >> what? >> we had an outhouse. >> oh, my. so, is this her block? >> yes. okay, this is it. here this was the backyard, and there was a chain link fence. >> angie was at my house that night until 20 minutes after 10:00. she moved out three weeks before. >> only three weeks before. >> and one of the reasons why was because she disobeyed a house rule. i was so grateful that she had come over because i hadn't seen her for three weeks. >> oh, that was the first

time -- >> that was the first time -- >> since she moved out? >> yes. >> oh. >> and the night that she came over, i rocked her and i says, i'm so glad you're not mad at me anymore. and she just looked up. she said, not even in a blue moon. so, the next day, that's when they told me that angie had been found dead. >> poor carol had been trying to find her daughter's killer for 22 years. >> there is one person who killed my daughter. that's what the dna shows. >> so carol is not going to give up, and i want to be the one to help her. >> one of the fortunate things in this case is that police preserved the evidence in a basement evidence storage room. and what was waiting in that basement was the ultimate clue in identifying angie dodge's killer. as the science progresses, a dna

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♪ let me remind you, there was a real crime. >> it was probably the worst case i've ever seen. it's the nightmare. >> i'm scott turow. as a bestselling novelist, i've written stories about greed, rage, and resilience. but sometimes, real life is stranger than fiction. >> i don't know what the hell you guys want. i wasn't there! >> crimes of horrific nature are like a terrible explosion. >> and i just know she was so scared. >> i want to be the one to help her. >> dna detective cece moore. >> a supernova obliterating lives and remaking them in a way no one could imagine. >> i had never been in a situation where there was such high stakes.

>> man, this is it. >> oh, yeah, guys. let's do this. let's go catch a murderer. >> here he comes. he's coming out. >> we've got him. >> wow. >> it was a miracle. >> these are the stories that keep me up at night. the cases that are truly stranger than fiction. >> all right. we're going to talk about the murder of angie dodge. >> she was only 18. she had just graduated from high school. so, when i started working with parabon, one of the very first cases i ever asked them about, maybe the first case, was the angie dodge murder case. she was stabbed. i wanted to find this mystery man who left his dna behind at the scene of her daughter's murder. there was semen present. and so the attacker did leave behind biological material. >> parabon nanolabs is a dna technology company. we analyze dna for forensics. >> christopher conley tapp

served 20 years in prison until he was recently released. >> when we began doing genetic genealogy, cece was very eager for us to reach out to idaho falls and see if they would allow us to do kinship analysis for them. >> over the past decade, genetic genealogy has exploded onto the scene. i mean, think about this -- people are able to spit in a tube and discover their family roots. cece moore began using genetic genealogy to help people who were adopted find their biological parents. >> i love you. >> i love you, too. >> how are you? >> good, how are you? >> give it up for cece moore. >> she received international recognition for her techniques. >> and so some very forward thinking law enforcement officials thought, could we, instead of submitting the dna of an adoptee looking for their unknown birth parent, submit the dna of an unknown suspect in a cold case, and use the genetic

genealogy techniques to determine their identity? and i knew the answer to that question was yes. >> in october of '17, i took over the case. so, when parabon reached out to us, if there's something else that's going to give us leads, it's just a no brainer for us. >> tom, have you been in touch with the department about getting evidence? >> yeah. so, there is evidence degradation. >> and we did the initial assessment, and unfortunately we didn't get very good matches. and cece and we were disappointed to say the least. >> it's 61%. >> yeah, that's -- >> working with degraded dna is like trying to put a puzzle together. say you have a hundred pieces in your puzzle. this was missing 39 of those pieces. >> right at the margin for what we would accept. >> but cece is very tenacious. >> i'd really love to be able to help on this case.

carol, angie's mom, writes to me almost every day. poor carol had been trying to find her daughter's killer for 22 years at this point. unfortunately, in this case, we don't have any strong matches. all of the matches are more distant. >> we have a number system that we use. >> a 1 means we've got like an immediate family hit and a 5 means we can't work it. >> that's like a "d" minus in a grading system. >> genetic genealogy had never been done on crime scene dna of this degraded quality. and then i heard from you, and i just had to make this work. i had to. >> so you had to spend all those nights -- >> i had to figure out a way. i decided to go back and take a deeper look at the genetic genealogy results. and i'm pleasantly surprised to see that it may not be hopeless. >> that's good news. >> yeah. so, how do we know which line to look at? i've pushed it up to maybe a

four plus. and so even with the degraded da, there is hope. >> that's exciting. >> but it's only because of you because if you hadn't been so -- >> persistent. >> so persistent, i probably wouldn't have spent the time digging back into this. >> i just want to know. and i just know she was so scared. i'm sorry. >> i'm sorry i keep making you cry. it's not what i mean to do. i'm going to do everything i can to help give you some answers. >> i just hope that i live long enough to see the day. so, we got to get busy. >> yeah. >> so the first thing i did was get a list of matches. people who share dna with the unknown suspect. match number one. this might be a second cousin once removed or a third

cousin-ish with the suspect. so, if i can find their common ancestor, i can work forward in time to find the descendants who were the right age when angie was murdered. and one of them would have to be her killer. another match who shares dna, their mother. her father. i started building their family trees and building genetic networks to find a common ancestor. this is my genetic network number one. and then i built some trees of other people who shared dna with the suspect but did not share dna with the earlier matches, so that would be my genetic network number two. i'm now trying to find a connection between these two networks. grandpa. great grandma. that link will narrow my search for a descendant who might be angie's killer. from genetic network number one, we have a daughter named cleo. from genetic network number two, we have a grandson that's named

clarence. guess what happens? they marry. our suspect has to be a descendent of this marriage through a son. but guess what? they have five sons! it has to be someone who was old enough and young enough in 1996. so both their grandsons and great-grandsons could be our suspect. we're down to six possible males that could be angie's killer. five of the six males lived over 1,000 miles away, but one of them lived in idaho. so in the middle of winter, i decided to take a trip to idaho falls. >> hi. >> hi. nice to meet you bill. hi, sage. good to meet you. cece moore. so, i was able to narrow it down to six possible suspects for you. >> wow. pretty good.

six is pretty good. >> can i ask you something? >> yeah, please do. >> how would you get that familial information for the descendants? >> that's a great question. >> just genealogical information? >> i was able to find obituaries for this family. i use newspaper archives quite a bit, marriage announcements, and engagement announcements. really valuable information. >> that's great. so you are a detective. see, you are a detective. it was not only our first big only lead.eally just about the - >> now this fifth son is most interesting to me, because they moved to idaho. even though it wasn't idaho falls, it was a lot closer than everybody else was. >> that just puts the onus for us to do our job. we're not just going off of the information we get from you. we're going to have to do the rest of the -- >> traditional police work. we are not going to grab all these six guys. >> so that means you all have a job to do. you always have a job to do, but you really have a job to do. >> okay, i'm back to eyes on the trooper. >> oh, [ bleep ] we just lost visual on him. we're trying to catch him. >> and you guys are going to

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i think everybody knows why we're here. we've got some really cool information from parabon through a forensic genealogist. we're going to try to covertly get a dna sample from one of six people that cece has identified as a possible contributor of the semen and hair found at the angie dodge homicide. he lives in the area. he has the right surname, the right, i guess, autosomal dna. >> that's very good. very good. i wouldn't be able to pronounce that. >> i hate you guys. >> everybody's just like, wow. >> sorry, buddy. >> it's all right. so, one thing that is beneficial for us is that he has got two sons who will share a lot of his same dna, and according to cece even if we can get a sample from them that will help us to narrow down who our likely suspect is. this is the first step in what

is going to eventually help us catch this guy. i know it is the kind of thing that has been giving me goose bumps for months and i am excited about it and so i hope you guys are, too. >> get some gloves get some swabs get some evidence bags. we want to be secretive when we do it but we also want to preserve that dna evidence as best we can. >> good job, sage. >> autosomal. >> autosomal, autosomal. >> one of the six names that cece had identified lived near a city that was about two and a half hours away from where we are. >> he worked in a factory. he was a family man living out in a home in a rural area. he didn't seem like the type of person that would do something like this, but i've learned in my work, you can't always tell who is capable of such violence. >> the suspect knows what they

did 22 years ago, but i can only imagine they are on heightened alert all day every day. >> so we put a plan together to take between six and eight of our own detectives. >> there could be dna here. >> and we made contact with their local investigators as well in that area. >> this is the target vehicle. we'll keep an eye on him. >> so, we are just going to hopefully find some piece of dna that he discards whether its blowing his nose, drinking a soda, whatever it may be. and we will collect that without him noticing and submit that for further testing. >> any information that i'm providing to the detectives is simply a tip. they are not going to just run out and arrest someone. >> i've got eyes on the car. >> they have to build that traditional case and collect that dna sample to compare to their crime scene dna. >> that's him. >> he didn't spit or throw

anything out on the way to the vehicle. i'll follow him out. >> it was really hard to surveil him, because his house was in a really remote location where it was mainly rural farm country. >> it doesn't look like there's a really good spot to actually watch the house itself, so we are going to have to find -- >> somebody is going to have to get an eye. >> and so, to have surveillance vehicles around just stuck out like a sore thumb. >> hey, bill, i am going to take a parallel road. >> the first day was a long day, a 12 or 14-hour day. >> i'm here at the house. there has been really no movement, so hopefully we will have better luck tomorrow and we'll be able to get that dna sample. >> the second day, we split half the team on the son and half the team on the father. if we can get the father sample

that would be fantastic. but if it's too difficult, perhaps we can get the son. >> all right, he's starting to move. >> we follow the father to his place of work. >> is he lighting up a cigarette or anything we should watch for? >> not that i can see right now. >> now, we realized through the course of our surveillance -- that his vehicle registration was expired. >> westbound kimberly road. >> and officers use handheld devices now to check for blood alcohol level concentrations. >> okay, the trooper is right behind him now. >> so if we could get a breath sample voluntarily, not coerced in any way, we could probably get an adequate sampling from this breath tube. >> okay, i am back to eyes on the trooper. >> just stay with him as best you can. >> does one of you want to drive and look for the sons? >> copy that. e've got eyes on him. h son bank there. >> pulled into the bank. >> there is a farmer blow right there.

>> he came out of the bank and spit a couple of wads of chew. hopefully we'll get some dna. looks like we'll get some good stuff. >> we continued to surveil the father. >> hey, bill. our trooper is up at the window. >> he has his alci sensor with him and he is taking a breath sample. >> it's so cold, it doesn't stick. >> well, gentleman, the magic just happened. >> he blew in the sensor. >> sweet. >> looks like you are going to owe someone some dinner tonight, bill. >> i love my wife, but you are a close second, sir. >> you did allork. >> oh, my gosh, so beautiful. >> bill, you're the proud new owner of two new spit tubes. >> awesome, dude! spencer is so awesome. i'll tell you what, spencer's mvp today. right here, right here. you know how i am going to pay you back? dinner. dinner is on me. dq or taco bell it's your call. >> somebody look up a place to eat near me.

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this case becomes the enigma that has hovered over idaho falls now for more than 20 years. the case retains, as a cold case, remarkable urgency to move forward and find the real killer. >> so, i'm really excited that they've been successful in getting this dna. i can't wait to get the results.

>> we sent those samples in and we're just waiting to get the details back from cece. >> the genetic genealogy had led to just these six cousins, but when the results came back, it seemed to eliminate all of them. >> and then it felt like the rug was pulled out from under me. >> the thought crossed my mind that, great, we're done. i really thought that we might be at a dead end right there. so, it was really depressing. >> it was a total shock. i just -- i just couldn't figure out what had gone wrong. never before had genetic genealogy given me the wrong answer, and i think the thing that i was most afraid of was failing carol and having to tell her that i couldn't identify him. >> the state of idaho is asking this court to impose the death

penalty. >> when i haven't found that answer yet, when the pieces haven't come together, the case doesn't ever leave me. it's always in the back of my mind. he's so young. >> i am not the monster everyone thinks i am. judge, i ask you to spare my life. thank you. >> thank god he didn't get the death penalty. >> little did we know -- >> when i met with carol, she really impressed upon me how important it was to her that christopher tapp's name be cleared. >> 20 years of your life has been taken away from you. >> he had been released fortunately, but he still had a murder conviction hanging over his head. i had never been in a situation where there was such high stakes. i had to figure out what had gone wrong. i couldn't walk away from this

and say, oh, well, it wasn't one of the six. i'm done, nothing more i can do here. i knew i could not fail carol, and chris needs for the true killer to be found so he can be exonerated. so, the bad news is we don't have a match, but it had to be a descendant of clarence and cleo ussery. that can't be a coincidence, and so i went back up that tree and back down that tree. when i had done the initial research, one of the grandsons had an early marriage. he was really young, his wife even younger. she was 16. 16! i mean, that's odd. and i wareally surprised not to find any children from that marriage, because most people don't get married that young for no reason., i deto look at her parents, and my hope was that an obituary would name the daughter and any children from that marriage. but i couldn't find it. so, a couple days passed.

i was on an airplane, and i got an email from my team member that says, i got it. here's the obituary. and not only does it name the daughter, but it names her son. he was carrying his stepfather's surname. and in 1996, guess where he was living? idaho falls. not just idaho, but idaho falls. hey, everyone, how are you guys doing? you look very serious. >> we're scared. we're apprehensive about what we're going to hear. >> i guess we can go over it on my screen. >> she begins to lay out all of the work that she had done on the report. >> and that makes them much less likely to be the subject. they only share centimorgans, definitely not what we expect. a major problem for us. >> we're kinda sitting there

listening to this going, is she gonna give us the bad news? when is it coming? >> and we might never find them. >> she just kept us on the edge of our seat. it was excruciating. >> and -- >> you're -- you're really adding a lot of drama for us on this. >> i'm not adding it. i'm feeling it. we've got him. >> are you serious? >> i'm serious. >> wow. wow. >> we've got him, i'm positive. >> it was really emotional. it was a really emotional call. now, we don't take anything for granted at this point, and we have to confirm all this information, but to have a lead like that after 23, 24 years, huge is probably an understatement. >> his name was brian dripps.

>> brian l. dripps. >> at the time of the crime, he was 30 years old. it was just a few days before his 31st birthday. he was going through a divorce. he had a child being born . >> dripps had only had some minor issues. there was a couple of misdemeanors on his record. he was a concealed weapon permit holder at one point. through our investigation we find out that he was actually in idaho falls at the time. >> not just in idaho falls, but right across the street from her house. >> it is 0620 in the morning, and we are in caldwell, idaho. we're going to go set up on our person of interest's house here. we don't know anything about where he works or what his daily activities are. so, wherever he goes, we can tail him and try to figure out what he does. >> we're about to pass by his house. he's at the end of this street on our left.

i just did the drive by. his truck is still there. mom's durango is still there. it doesn't look like any lights are on. vehicles are definitely there. >> that's good news. all right, so this is where his house is. the main access road that she's probably going to use when he leaves is this one. so we've got a guy down here watching this intersection. we're up here watching this, and then we've got a guy down here north. >> is this guy potentially, uh, dangerous? >> yeah, we're not -- i mean, it's something we've got to keep in the back of our mind in that this is a murder investigation. the crime is the most significant crime you can have out there, and if he gets desperate, then you never know what could happen here, so we got to be careful. >> it's just a waiting game now. we can be sitting here for 2 minutes up to 12 hours.

this is tort torturous. just watching one intersection for one car, then you start thinking to yourself, like, how often do i leave my house if it's my day off? we've been going for five and a half, almost six hours, just waiting. >> okay, it is our target. he is southbound. and he was smoking a cigarette that he had hanging out the window. >> man, this is it. this could be great. >> do we have somebody close enough to watch if that butt comes out? ca ahead ousup bend himg gethere. got aguy ri >> southbound midway. >> he's got eyes on him, and those cigarette butts are like -- >> it's the same route that he took last night. >> -- they're like dna traps. it would be perfect for collecting a sample.

>> i think i'm behind sage. >> sage, are you just rolling through the construction now? >> affirm. i'm right behind spencer. >> cigarette is on the ground right at the rumble strip. right there, sage. right just past the lettering. >> where is it? >> he said it's right past the rumble strip. >> dude, i'm looking for smoke. i don't see it. >> i can smell it. >> oh, hey, sage, there's one here. i don't know if it's it, though. >> does it look fresh? >> there was a bunch of cigarette butts. >> oh, back here? it's going to be on your side, right, if he tossed it that way? couple over here. that one's beat to hell. they're all over, dude. ugh! we could have picked up a hundred and sampled them and we might not have got the one. >> [ bleep ] it's a crap shoot. >> there's butts all over the place. >> daggone it.

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this is day two of our surveillance, trying to get our dna sample. he seems to be a creature of habit. a couple of times a day, like clockwork, he goes in and gets some pop. >> getting in his truck right now. >> somebody on our team thought that he would come out right about noon. sure enough. we are going to follow him down here. we've got some guys prepositioned. >> he's headed northbound now towards the target residence. >> so we just got the information that our guy is moving. in fact, he is coming by us right now, cigarette is in hand. cigarette is in hand. >> he just flicked it out. i've got it. >> it's still smoking.

>> bingo. looks like we got it. >> oh! just flipped it out. spencer's got it. that could have just been our huckleberry right there, guys. you better get out of that van. right here, dude. yes, good job! >> yeah! >> awesome. >> let's get to the lab. >> let's stay focused. >> saddle up. >> hello. is this cece? >> yes, it is. >> we were able to get a cigarette butt. it was still smoking when we picked it up. >> good work! >> hey, cindy. >> hi, how are you? >> very well, thank you. i'm here to drop off this sample if you guys could work your forensic magic and compare it against our unknown sample. >> absolutely, we can do that. >> whoo-hoo.

if it's not a match, i give up. >> the next day, i'm out on my lawn mower on saturday, trying to get my yard mowed. lieutenant tisdale calls me, and i know he would only be calling me about this at this time and -- >> you're probably ready for some results. >> i am! >> well, i think before we get to that, we should go back and talk about some things in more detail, you know? >> yeah, thanks. thanks, captain. i get what you're doing. >> so, our guy, brian l. dripps, is the match to the crime scene semen that was left. >> it was a huge relief. we've got our match. >> it was huge. that's probably where it set in the most with me. man, this is the guy. this is the guy we've been looking for for 23 years. >> so, how does it feel, guys? >> unbelievable.

and now we're in game-face mode, figuring out what we need to do for the rest of the investigation. >> yeah. my work's done and your work is just starting. >> this is not just a regular case. it's not even a regular homicide. it's woven in the fabric of every ifpd guy's career that's here. hell yeah, guys. let's do this. here we go. we're going to do this. let's go catch a murderer. our plan was that if he was as regular as what we had seen in the past, this is the street he'll be coming out on. we set up in very similar surveillance spots that we were before. >> target is going mobile now, backing out of his driveway. >> sweet. geez. and sure enough, right about noon, gets in his red truck. there he is. all right, i've got him. he's coming up to the stop sign at midway. standby. we couldn't have timed that any better, could we guys? >> looks like he's in the south lane, stopped at the red.

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it's a bank. there he is. >> he just landed into a parking spot. >> just pulled into a parking spot, idaho central bank. >> somebody got an eye? >> the suspect stopped here to do a little banking. we're going to stay outside and our guys are going to contact when he comes out of the bank. we got our two guys on foot going in now. what up, brother? >> he's just standing at the main desk right now, so -- >> copy that.

we got -- john and sage are in position, just so you know. >> orbing, stand by. okay, he's coming out now. >> all right, heads up. he's heading for the exit. >> 10-4. >> here he comes. >> he's going to be heading out. >> there he is. camo fatigues, black shirt. big long beard. >> here we go. they're walking up, making contact now, standby. >> that's our guy. >> sage is the lead detective on this case with sergeant next to him. got the lieutenant on the other side of the truck, trying to see if he'll be willing to come down voluntarily and answer some questions at caldwell pd. >> he's agreeing to go with them. >> he's trying to get back in his car. >> maybe he's wanting to leave and go away.

i can't really tell which one it is. oh, he's getting in his truck with him. john's going to sit in his truck with him. damn, i don't like that without the wire. i don't like that without the wire. >> he would not have us drive his vehicle or neglect like that. john's hopping with him. he's comfortable. and we will be immediately behind him, following him home. >> he arrives at home. gets his dog out. hugs his mother. and goes back to the caldwell police department for our interview. >> we used the caldwell police department center interview rooms. he denied any involvement off the get-go. this interview went for about five and a half hours-ish. >> and they told him, we have your dna.

>> he still really didn't want to admit anything, but wanted to take a smoke break. and then when he came back in -- >> he kind of slumps a little bit. he was silent for a couple of minutes. and then he just said, i did it. i raped her. and apparently i killed her. >> he told us that he had gone over there with the intention to rape angie, but not kill her. we asked him if anyone else involved and he said no. >> this was the way to make this nightmare finally come to an end. it was a huge victory for me. >> hey, ladies. how you doing? >> so good to see you.

>> we made it. >> we sure as hell did. >> you bucked up. >> cece. >> hi, carol. >> thank you. it couldn't have been done without you. >> well, it couldn't have been done without you. i did it for >> you're almost superhuman to us. >> i would have given up without carol. >> it's 3:00 in the morning. what are you up doing? >> we made it. thank you. >> to see carol finally get the answers that she had been seeking for so long was really gratifying as much as it was incredibly difficult to watch. >> we've charged a 53-year-old man named brian l. dripps with the murder and rape of your daughter. >> okay. just 23 years ago, we were in

this same building, hearing the sad news that she was gone. thank you. i can tell my grandchildren that i've failed to be a part of -- because of my craziness. but it took craziness to get where we are at today. >> there will be a constant theme in our police department talks today and that theme is carol. and i know captain squires poured his heart and soul into it because of carol dodge. >> it was a lot of tears shed. it was surreal for me. >> today we're here to announce that we have arrested brian leigh dripps. his dna matches the dna sample

left at the scene. carol, for 23 years, every second of every day, she has been looking out for her daughter. >> angie's given us something here. what we've learned from working with dna in this case will be applied to many, many other law enforcement cases going forward. >> i can't even express how hard this journey has been, and the hundreds of people that has been affected by one person's choice to take my daughter's life. >> at the time that the idaho falls police announced brian dripps' arrest, chris tapp was still convicted of this murder.u. >> i recognize it was another generation of officers, but at this point does christopher tapp get an apology or reparation or

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that contributes to dandruff? yeah, he just 100 percent over does it. take it up to 100 with clinically proven head & shoulders. our justice system lumbering, often blind, still does its best to make order out of our disordered existence. the saying is that justice delayed is justice denied, but that is not true in this case. after too many years and too many mistakes, carol was finally going to get justice for angie.

>> count one as set out in the information is the charge of murder in the first degree. how do you plead? >> guilty. >> tell me what you did which makes you guilty of this charge? >> i went over there with the intent to just rape her. i was pretty high on cocaine and alcohol. i had a pocket knife with me. i didn't mean to murder her, but i guess it happened. >> had police not focused in on ben hobbs and chris tapp, they may have been able to identify dripps as the assailant long ago. >> this is a 23-year case, and we're going to talk about the last year and a half and really focus on the last six months.

>> i could see chris tapp right over my left shoulder, and i kept peeking back at him to see his reaction to the news. >> dripps is 53 years old and has resided most recently -- >> the press conference was overwhelming, but it was more of the vindication of it all, because i kept telling them i didn't do it for years upon years. and it was good to be there for carol. her family can go to bed easier now because they actually have the true killer. there was no hatred, there was no animosity. they were happy to see me. >> sorry you had to give 20 years of your life. but you gave it to angie. >> when chris walked out of prison, he was not exonerated. he was still a convicted murderer. and so, while he was physically free, he was not mentally free.

>> i was in that courtroom. it was a miracle to finally see chris tapp be exonerated. >> i am going to grant the state's motion to dismiss both the rape conviction and the murder conviction on the basis of actual innocence of mr. tapp. [ cheers and applause ] >> this was a community reckoning. and it just really felt like a restorative moment. >> i'm just going to enjoy it every day, living the life that i should have been living for the last 22 1/2 years. >> freedom! >> freedom! >> that's what a free man looks like. >> the silver lining for me in this case is carol dodge. >> this case begins and ends

with carol. >> without carol dodge, angie dodge's murder would have gone off into the annals of boxes upon boxes in some basement somewhere. >> she is the person that you would want fighting and advocating for you in any context. >> her fighting for me to help get released, the reason why i'm home today. >> her quest for justice ought to give us hope about what human beings are capable of. >> she renews my faith in humanity and in the capacity to forgive. >> i love all of you dearly. >> only in the mystery novel are we delivered final and unquestionable solutions. the irony is that fiction gives you a truth that reality can't deliver. our lives are often far messier

than that, but if we cannot find the truth, what is our hope for justice? we should note tonight that brian dripps is scheduled to be sentence in the late november. >> cece tells us she used genetics to solve cases. i'm amy robach. for all of us here at "20/20" and abc news, have a great night. "friday night lights" for

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