so it's like a constant reminder that your mom is with you. yeah. hoda kotb: and there's one other shared trait. and that's what kept erica alive in her darkest hours. her mom's fighting spirit. to battle with what she had to battle, i guess she did have earon's fighting spirit. you know, to pull through all that. so thank god for that. that's all for this edition of "dateline." i'm craig melvin. thank you for watching. [music playing] hello, i'm craig melvin, and this is "dateline." she was everything to me. hello, i'm craig melvin, and this is "dateline." she was so sweet to everybody. state troopers said bonnie had died in a hiking accident.

craig melvin: they said she fell off a cliff. her mother said they were wrong. i'm screaming to them, these are defensive wounds. craig melvin: no witnesses. no weapon. nothing left behind but a stranger's dna. we no longer have some accidental death. this was a homicide. craig melvin: they had no suspect, but for years, her mother kept fighting to find bonnie's killer. reporter: bonnie's mother continues her own crusade. craig melvin: then, after more than a decade of searching, a phone call. a lady's got information that was a match. can we get a conviction on just the dna? craig melvin: and there was something else, something about bonnie herself. it was almost like she knew something. [music playing] hello, and welcome to dateline. we often see headlines about dna evidence exonerating the innocent. it seems we hear less about how dna from an unknown person

might be used to track down the guilty. in the story you're about to see, a sample found on a murdered young woman was sent to the national database. 12 years after she was killed, it turned up a match. but in this case, prosecutors would need more than dna to convict a killer. here's keith morrison. keith morrison: many years ago, late on a september night, a family in anchorage, alaska, got a knock on the door. it was one of those eerie feelings instantly when someone knocks on the door at 10 o'clock at night, and they ask to speak to my dad. keith morrison: it was 1994. samantha was 12. her brother adam 13. they huddled on the staircase overlooking the front door. i heard my dad collapse and scream, no, not bonnie. and i just remember thinking, god, please let her be in the hospital and let her be ok. keith morrison: bonnie was elder sister. bonnie craig, 18 years old.

i remember my dad dropping to his knees, crying on the front deck, and that was about the first time i've ever seen that happen. keith morrison: their mother karen was on vacation, was on a sailboat off the coast of florida four time zones away. it was 2:00 am when she docked, got the news bonnie would not be ok. alaska state troopers had called and said that bonnie had died in a hiking accident. and you're thinking they're nuts. what's going on? why? why would you say something like that? keith morrison: but it was true, at least that bonnie was dead. it was a hiker who found her body floating in mchugh creek a few miles from anchorage, though at first they didn't know who it was. no id on the body. alaska state troopers finally figured it out from the class ring she was wearing. but karen could not take it in. not bonnie, her model child, her conscientious college freshman,

who she knew was going to school that day, not hiking miles and miles from home and the university. none of it made sense. she didn't drive, so how did she get out there? somebody would have had to be with her. and she would not have missed school. she absolutely did not go out there on her own. keith morrison: in fact, bonnie's sister heard her get up that morning at 5:00 am and set out on her 45-minute walk through the pre-dawn dark to catch the bus that would take her to her 7:00 am class at the university. she usually didn't return home till about 10:00 pm, packing most of her classes into a few days because she had a job at sam's club. she was incredibly responsible. keith morrison: responsible and nurturing toward her younger siblings, in part because their parents, mother karen and stepfather gary, had divorced a couple of years earlier. she just liked to help us make all the right decisions, and i looked up to her.

keith morrison: and other brother jason was two years older than bonnie. i tell my kids this all the time. you can decide in the morning when you get up, you can have a good day or a bad day. and she would always choose to have a good day. she was incredible. one of those people that, as soon as you start talking to her, you're instantly attracted to her personality. in high school, they used to call her tigger because she was bouncy and fun and so sweet to everybody. she was involved in sports. she was coaching the kids with swimming. she started students against drunk driving. she was the very first girl to be on the wrestling team at service high school keith morrison: bonnie had a serious boyfriend, cameron, who had left that summer to start college at the university of california. she used to record herself singing and talking to him and sent him cassette tapes. she was crazy about him, yes.

they were madly in love. keith morrison: and now, suddenly, bonnie craig was dead. at least, that's what her mother karen had been told. but as she flew home to alaska, she struggled with denial. i believed, flying back, that as i got there, she might even be at the airport saying, oh, mom, i'm sorry. it wasn't me. it's all just been a terrible mistake. keith morrison: but no, bonnie was not at the airport to meet karen. her body was at the funeral home. karen foster: i only got to see her face. it's just incredibly sad. and you think, oh my god, it is her. and you can't believe that your baby is lying there, cold and lifeless. keith morrison: the next day, karen saw her baby again, saw more than her face, and noticed something that seemed to confirm what she already believed.

it wasn't a hiking accident. she called the alaska state troopers. her knuckles were broken. so i'm on the phone screaming to them, saying, no, you've got to get back. you got to take more pictures. these are defensive wounds. keith morrison: look again at bonnie's body, she demanded. look harder. what happened to bonnie craig that september day, screamed karen, was murder. craig melvin: coming up. i think my mom felt very responsible. like i caused this. i caused this, you know? they killed bonnie because of something i did it. craig melvin: was her child's death revenge? when dateline continues. swiffer duster traps 4x more dust, for a clean even mom approves of. that reach! making hard to reach... so easy. swiffer. wow. the mother of all cleans. love it or your money back! protect against rsv with arexvy.

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president trump's first 100 days watch. >> i'm going to be here five days a week again. >> read and listen. >> staying up half. >> the night. >> reading executive orders. >> for this defining time in the second trump presidency. stay second trump presidency. stay with keith morrison: in the autumn of 1994, a suffocating grief descended in anchorage, alaska, and settled on the home of 18-year-old bonnie craig. it was a very bad night. it was tough. it was really tough. i guess you just don't know what to do after that, how to channel your emotions. we were all devastated. keith morrison: once she arrived home, bonnie's mother karen jumped into action. had to find the truth about bonnie's day and seemed equipped to do so. she was an anchorage reserve police officer, and, before that, a local tv reporter. she told her media friends it was murder. the troopers didn't know what they were doing. she even included samantha in this interview. she wouldn't have taken a ride,

and she wouldn't have taken it from a stranger for sure. there was nothing accidental about it. keith morrison: but, initially, it did look like an accidental fall to one of the troopers, the one who happened to have been the first to talk to karen. but the others saw the evidence and thought murder. one trooper at the crime scene was tim hunyor, now retired. one thing that was strange to us, we did find one drop of blood on a leaf at the top of the cliff. keith morrison: one drop of blood. one drop of blood. keith morrison: which was found by this man, trooper robert beatty, also now retired. i was on my hands and knees, just kind of looking and came across that drop of blood. we got blood up here. did he tell you that? keith morrison: how big was this drop? robert beatty: about the size of a eraser head, really. and the interesting part about that was that it was a drop that had fallen straight down. keith morrison: indicating to the troopers that she'd been hurt somehow before she got anywhere near the edge of the cliff. with it being five or six feet away from the cliff's edge,

it was real apparent to me that we no longer have some accidental death. this was a homicide. keith morrison: but, because there was no sign of a struggle at the crime scene, no weapon, nothing more left behind, it was obvious this would be hard to solve. so, though eventually they told karen they agreed with her bonnie had been murdered, they wanted her to keep that information secret. fat chance. by then, karen was telling anyone who would listen what she thought. and she was not about to stop. so you spoiled it for them? yeah, i did. i got in trouble constantly for me getting involved in the investigation and also-- opening your big mouth to the media. yeah. keith morrison: she was troubled by something else, too. her reserve work with the anchorage police department.

was bonnie the victim of a revenge killing? i was doing undercover work doing drug buys, and we had done this major bust just beforehand. so you're in a position to make some people pretty mad at you. right. i think my mom felt very responsible. like i caused this. i caused this, you know? they killed bonnie because of something i did. she took that as it was her fault. and so, therefore, she had to-- figure it out. had to solve the crime. keith morrison: caught up in a whirl of guilt about her own possible role and a growing anger about what she perceived as an inept investigation by the troopers, karen began a campaign to keep bonnie's case in the public eye. we started handing out flyers. we got bumper stickers made. we started building up a reward. we had bus signs driving all around town.

the first one said, "who killed bonnie?" keith morrison: and continued doing interviews. somebody out there knows what happened, and we desperately need to hear from them. keith morrison: oh, and there were lots of tips, which went nowhere and only ate up the troopers' precious time. they resisted karen's efforts to insert herself into the case and told her as little as possible. didn't tell her, for example, about that drop of bonnie's blood at the top of the cliff. she was very demanding. i think she felt, with her police background, she should be privy to all the information we had. oh, man, the troopers hated me, because i just kept pushing and pushing. i wasn't about to give up. i was so fearful that things were being missed. keith morrison: tension grew. troopers rarely returned karen's calls, which compounded her belief the investigators didn't know what they were doing. unwilling to believe and unaware that they were doing a lot.

we're talking to all bonnie's friends, people she went to school with, people she worked with, anybody that had any connection at all with bonnie. we walked the same route bonnie walked that day to see if anybody was around. talked to the paper girl. talked to people we saw jogging on the street. we would ride the bus for a week straight just to talk to all the people on the bus, see if they saw anything. for a week? yeah, to see if they saw anything. see if they heard anything. and nobody heard anything? no. no one saw-- no one can remember seeing bonnie that day. keith morrison: winter came. karen, consumed by grief, rage, guilt about her undercover drug work, was now a single-minded crusader for bonnie. nothing else mattered. nothing at all. it's unbelievable. as a mother, i abandoned my kids and just started looking for a killer.

keith morrison: and it was months before the troopers gave karen the rest of the news about what happened to bonnie in the last minutes of her life. craig melvin: coming up. as investigators begin looking for possible suspects, they looked first close to home. i remember just straight up asking him, dad, did you kill bonnie? craig melvin: when dateline continues. stay ahead of your child's moderate-to-severe eczema with dupixent as they welcome the feeling of touch with clearer skin and less itch. the #1 prescribed biologic by dermatologists and allergists helps heal their skin from within. severe allergic reactions can occur. get help right away for face, mouth, tongue or throat swelling, wheezing or trouble breathing. tell your doctor of new or worsening eye problems, like eye pain, vision changes, or blurred vision, joint aches and pain, or a parasitic infection. don't change or stop asthma or other medicines without talking to your doctor. ask your child's doctor about dupixent.

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keith morrison: it was a standoff, tense and unpleasant. karen, the grieving mother furious at a team of state troopers she did not trust, determined to find out herself who murdered her bright, beautiful bonnie versus detectives who, in turn, did not trust her and so told her little about what they knew what they were learning. but they eventually let her see the autopsy report, and that's when karen saw a dozen or so brutal head wounds. that's also when the medical examiner told her about one extremely important piece of news, horrifying but potentially useful. bonnie had been raped, as well. and as awful as that was, it left one sliver of hope. the killer left behind his dna. match it, and they'd solve the case. so who was it? it couldn't have been the boyfriend, cameron. he was down in california going to college. keith morrison: troopers said they looked at karen's work

as a reserve undercover police officer and determined the men in those drug buys were not involved either. but there was one man very close with opportunity, who returned home to anchorage from an out of town trip just the night before the murder. bonnie's stepfather. karen's ex-husband. samantha's dad. and i remember that being a really unsure, really scary feeling. in my mind, it didn't make sense. my dad is not and never has been a very violent man. and so i remember just straight up asking him, dad, did you kill bonnie? do you remember the look on his face when you asked him? he was devastated. he was completely devastated, but i just needed to hear it from him, because there was so much uncertainty in my life at that point. there was so much confusion that to be able to have him tell me when he was tucking me in bed was all i needed. keith morrison: the dna spoke, too. he was eliminated. but someone did it.

troopers set about collecting dna from every man who might have crossed bonnie's path the day she was murdered, including some men who worked with her at sam's club. we had information that there was one employee there who bonnie complained to her supervisor about. evidently, this individual got bonnie's phone number off the sam's club computer and would call her. he was doing a little stalking. that threw the red flag up right away. keith morrison: dna cleared him. they moved on to a second young man at sam's club whose behavior seemed suspicious. they had a meeting at sam's club that morning that she was murdered, and this individual, he did not sign into the meeting. you went and checked him out? we checked him out. we come to find out that he was at the meeting. he didn't sign in. others saw him there. we still got his dna, and he was cleared. keith morrison: then there was a student, attended an english class with bonnie, threw up all kinds of red flags. that is, once the teacher read his class journal. i met with her, and she showed me his journal

that was filled with anger. there was a reference that september 28th was gonna be a rough day and that he was gonna be put to a test. and that was the day she was killed. yeah, and there was a reference to die [bleep].. you could see that he was very angry and troubled. he wasn't in class that day, and he came to her later on the afternoon soaking wet and reeking of aftershave. and he handed in his paper. and she felt like he was nervous at the time. all the signs pointing toward guilt. karen foster: and then he was also at the scene when they were recovering her body. that very day. karen foster: yeah. keith morrison: one of the looky-loos, as they say. yeah.

which is often the case with somebody if they've killed someone. they'll go back and look at the investigation. right. so what did you think when you heard that? i thought this is it. i remember instantly thinking, well, bonnie had pepper spray. i wonder if she pepper sprayed him, and that's why he had to mask it with cologne. it sounded very suspicious to us. so, right away, we're just talking about that, jumping on that to find the guy. keith morrison: but the dna eliminated him, too, or so the troopers told karen. and then they said, no, the dna didn't match, and he has an alibi. his step-mom said he slept in that day. did you buy that? no, absolutely not. i said, what if there was two people? it didn't have to be his dna. yeah. he could have been involved, and it was somebody else's dna. did you make some noise about that? absolutely. keith morrison: but then months went by and years.

no match. no justice for bonnie. no peace for karen or the troopers. and then it was 1998, four years since bonnie's murder. the troopers still working the case, when one of them zeroed in on a former city bus driver. and he would fill in for the regular driver on bonnie's bus route. and we just found out some strange, strange things about this guy. he had several reports about him trying to pick up young girls, one of them was the daughter of another bus driver. i'm talking 14-year-old girls. oh boy. he was a substitute teacher but got fired for some of the things he was saying in his classes. apropos of young girls. yes, and he left the area and moved down to california. keith morrison: the troopers went looking and found him in davis, california. we flew down there to try to talk to him. keith morrison: could this be him, the man who raped and murdered bonnie? could the hunt finally be over? they got his dna.

it came back that he was the individual involved in bonnie's death, or that he had sex with her. everyone was happy. everyone was ecstatic. you got your guy. we got our guy. keith morrison: finally, they had their man. but what is it they say? don't count your chickens. craig melvin: you'd think it would be all over if the dna matched, but it wouldn't be that simple. coming up. you think, wow, this-- this is the guy. then the bomb hit. the bomb? craig melvin: when dateline continues. “the darkness of bipolar depression made me feel like i was losing interest in the things i love. then i found a chance to let in the lyte.” discover caplyta. unlike some medicines that only treat bipolar i, caplyta is proven to deliver significant symptom relief from both bipolar i & ii depression. and in clinical trials, movement disorders and weight gain were not common. caplyta can cause serious side effects.

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>> the president warned americans. >> the new. >> 25% tax. >> on imports. >> may cause pain, but it will. >> may cause pain, but it will. be worth the. welcome back to dateline. i'm craig melvin. years had passed since bonnie craig was found dead, and investigators seem to be coming up against one false lead after another. and then a new dna match to a man who had moved to california. could this mean they could finally bring bonnie's killer to justice? or would it lead to yet another dead end? here's keith morrison. that one. keith morrison: all that was left to the family now, in the years after bonnie's murder, was the collecting of memories, of bits of things that reminded them of how good she was, how thoughtful. like a school paper bonnie was to have turned in the day she died. she'd read it to her sister the night before. it was an english exercise, said samantha, in which bonnie wrote about saying good bye. saying good bye to her friend katie

who had died in a vehicle accident. saying good bye to her dad, her biological father, who was never really a part of her life. saying good bye to cameron as he went away to college. it was almost like she knew something. keith morrison: something was broken in the family. could never be fixed, of course. but then there was this news, huge news, that the dna matched a one-time bus driver who'd moved down to davis, california. the troopers called karen as soon as the results came in. you get excited, and you think, wow, this-- this is the guy. yeah. then the bomb hit. the bomb? the bomb. they had some new dna system out. they retested it, and turned out it wasn't him. ouch. no one could believe it. back at square one. back at square one. then dealing with karen again. keith morrison: karen ramped up her campaign to keep bonnie's case in the public eye. reporter: bonnie's mother karen campbell continues her own crusade to find her daughter's killer. she remains unsatisfied with the investigation.

keith morrison: the attention brought in tips. troopers eventually tested more than 100 dna samples, and nothing came of it but frustration. the case grew cold, as cold as some of the winter nights up here. and four years became six, eight, 10. the case faded from the public spotlight. and so around thanksgiving 2006, 12 years after the murder, when trooper hunyor answered the phone one day-- couldn't believe it. the director of the state crime lab contacted me and said that they just got information that there was a match through the codis system on a semen sample for bonnie craig. keith morrison: they got him, or the system did. codis is short for combined dna index system. it's a national database of dna profiles created by federal, state, and local crime labs. and codis got a hit.

gave us a real good day. everybody was happy. keith morrison: the match was in new hampshire, of all places. a man who'd been imprisoned for armed robbery back in early 2003. but nobody got around to entering his dna into codis until late 2006. they got a hit the first time it was run. keith morrison: so trooper hunyor flew to new hampshire to meet the man behind the match. his name was kenneth dion. hunyor had never heard of him. tim hunyor: hey, my name's tim hunyor. how you been? my name's-- tim hunyor: good to meet you. keith morrison: their q&a session was taped. tim hunyor: ok, when did you get into alaska? uh, it was in '90 sometime. and i just started talking to him about his life. where he grew up. where he went to school. how he got up into alaska. so you didn't jump right in and say, we know you killed this girl. no. just tried to gain some rapport with him. basically smoked and joked for a while. did you get to travel the state quite a bit? a little bit. i went up to denali a couple times

with friends from the military. i've been to valdez a few times. i like it down there. found out he was a fifth-degree black belt in martial arts. he was ranked number 10 in the world in a fighting competition. keith morrison: wow. he liked to brawl in bars, he said. carried martial arts weapons in his car, including nunchakus. that was his thing. he loved it. he loved the adventure. keith morrison: he was married at the time of bonnie's murder but later got divorced. that's the worst thing i've ever screwed up in my life is that marriage right there. i loved her to death, yeah. keith morrison: told you all this. yes, mhm. keith morrison: if kenneth dion knew why an alaska state trooper would fly 4,500 miles just to talk to him, he didn't show it. he was civil. he answered all the questions. just like we were friends. for some reason, i got a bad memory. i forget things. faces i'll remember. i'll forget your name. i've already forgotten your name. tim hunyor: well, it's tim. tim, yeah, i'm sorry. tim hunyor: it's ok. no problem at all. told me that after he got up here in the army,

he got into cocaine. he started using drugs, and then everything went downhill. he was basically kicked out of the army, and the cocaine became really a big part of his life. and he did some armed robberies to support the cocaine habit. keith morrison: he was in and out of prison in alaska. and then in 1996, two years after bonnie's murder, he moved back to new hampshire, where he got in trouble again. and now here he was answering trooper hunyor's next question. did he follow the news when he was up in alaska? oh yeah, all the time. tim hunyor: did you ever meet someone called bonnie or anything like that? it was a pretty high profile case. i can't recall. i can't remember. keith morrison: hunyor tried to jog dion's memory. tim hunyor: then i took out bonnie's picture and showed it to him. keith morrison: then something curious happened. the man who said he remembered faces insisted he didn't recognize bonnie, but trooper hunyor was watching his body language.

his leg started twitching, and he just kept glancing at it. keith morrison: but might he have met her even once, the trooper asked. 18 years old? tim hunyor: mhm. hell no. my wife would've killed me. [laughter] keith morrison: then he got right to the point. tim hunyor: and the sad thing about it. later on that day, her body was found at mchugh creek. whoa, whoa, whoa, what are you trying to say? tim hunyor: well, like i said, i'm just down here addressing it, and your name has come up, like hundreds of names. why would my name come up? tim hunyor: that's what i'm trying to figure out. keith morrison: what'd you think? oh, i thought we had our man. keith morrison: troopers looked up some of kenneth dion's new hampshire girlfriends. one said he casually mentioned he could kill someone and get away with it. and she just thought, he's blowing smoke, you know? and then he also told her that i can't go back to alaska because of something i've done. keith morrison: she never asked him about that, but she told the troopers they might want to talk to her sister. and the sister told us, yeah, he

told me that he can't go back to alaska because he killed somebody. craig melvin: coming up, bonnie's family learns investigators have made an arrest. i'm immediately so fearful. can we get a conviction on just the dna? craig melvin: when dateline continues. protect against rsv with arexvy. arexvy is a vaccine used to prevent lower respiratory disease from rsv in people 60 years and older. arexvy does not protect everyone and is not for those with severe allergic reactions to its ingredients. those with weakened immune systems may have a lower response to the vaccine. the most common side effects are injection site pain, fatigue, muscle pain, headache and joint pain. arexvy is number one in rsv vaccine shots. rsv? make it arexvy. it's not.

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can arrive when you least expect them. karen was on vacation again, a remote island in the philippines. an email arrived from trooper hunyor. call me, it said. i tried calling him, and it kept getting disconnected. keith morrison: but finally they had a conversation long enough for karen to learn one thing, one amazing fact. a dna match. after 12 years, they had the man they believed murdered her daughter bonnie. and there on that island, karen felt afraid. you would expect that i would be thrilled, and no, i'm immediately so fearful that, oh, my gosh, now we know who's done it. are we gonna get him convicted? keith morrison: a few months later in 2007, kenneth dion was indicted and extradited to alaska. karen's anxiety only grew. i didn't trust the investigation. is the evidence still there? the investigators. the witnesses.

can we get a conviction on just the dna? keith morrison: and to make it worse, dozens of pretrial hearings dragged on four more years. it's unbelievably long and painful. everything's like the day that she was murdered. it's like having everything ripped open again. keith morrison: the trial finally started in may 2011. she has 11 linear lacerations on the back of the skull. keith morrison: it was paul miovas's first trial as alaska's assistant attorney general in charge of cold case homicides, and he was worried. i went into it with a heavy heart. i knew that it was gonna be a very difficult task. keith morrison: that's because the dna taken from kenneth dion did not prove he raped and killed bonnie, only that sex took place between them. and beyond the dna, the prosecutor had little to connect dion to the murder. there was no weapon, no motive, no witness to the crime. we not only had to establish that kenneth dion was

the killer, but we also had to disprove that it was an accident and prove that she had been murdered and she didn't fall off the cliff. keith morrison: his co-counsel jenna gruenstein was a 13-year-old anchorage school girl when bonnie was murdered. i remember very vividly how much this impacted the community. it's everyone's sense of security when you know that somebody was literally snatched off the street. keith morrison: here in anchorage, they were under intense pressure. the courtroom was packed. standing room only. and then, on the second day of the trial, a new problem. the defense attorney told the jury in his opening statement that the initial investigation at mchugh creek was inadequate and, in fact, the crime scene video was missing and had been for years, confirming karen's worst fears about the troopers. it just made us sick. keith morrison: which made the news that came the next day all the more shocking. out of the blue, somebody at the alaska state troopers office found the crime scene tape.

good news? well, you'd think, but-- my concern was that it threatened the trial itself. we immediately took a recess and a five day break in trial. keith morrison: the amazing discovery of the long lost videotape could very well be grounds for a mistrial because the defense got it after the start of the trial. for five days, the prosecutors researched case law, marshaled their arguments, and worried about yet more delays in the trial. but then good news, the defense attorney decided he would not request a mistrial and back in court, prosecutors played the crime scene tape, the public's first chance to see what investigators did the day of the murder. i recall prior to playing on the tape my dread-- on-- boy, what's the family gonna feel? couple scuff marks. keith morrison: it was trooper beatty who took the stand when the video rolled. robert beatty: this is the first time they've seen their daughter in this horrible position,

dead, floating in the water. unbelievable. unbelievable. i couldn't stop crying, but i made myself watch everything. keith morrison: and as she did the most amazing thing happened. you would think that for a mother to watch something like that would just be horrifying. it would. it was healing. healing? healing to me, because i knew then that for 17 years that i hadn't known that they did do the investigation. they did take care and were very competent at the scene. keith morrison: for all those years, she accused the troopers of being incompetent at the crime scene, and she was wrong. and they were down to their knees looking for evidence they were in the water

looking for a weapon. that must have changed everything for you. it did. keith morrison: that's a big revelation for her. it was. it was. i went out, as he walked out of the court room. i gave him a hug and told him thank you. 17 years of anger and tension just popped like that. pretty much. within a few minutes. keith morrison: but the prosecution's problem remained. could bonnie have picked up dion's dna from consensual sex? the only solution, let bonnie's own character speak for her. i haven't come across anybody else that's been her age and had the level of maturity that she had. party girl she was not. she clearly was not a party girl. keith morrison: what's more, she was seriously in love with her boyfriend cameron. it was just clear from every aspect that they were completely in love with each other. keith morrison: and all these 17 years later, even here in court, cameron was grieving still. i loved her.

keith morrison: so deep in love, but also far too busy, said the prosecutors, to sneak off for some secret tryst. she was working. she was in school. she didn't have time. keith morrison: and why kenneth dion? he was a married man with a newborn, a cocaine problem, and a vastly different life. they came from two completely different worlds, and there was no reason for the two of them to have mixed together. keith morrison: anyway, said the prosecutors, there was physical evidence of rape. her pants were smeared with grass stains. one of the buttons was undone. she didn't drive, and the place she was killed was miles away. someone must have taken her there, there where investigators found that one telling drop of blood on a leaf near the top of the cliff. this is what really showed that she was injured before she went off the cliff, which establishes that she had been beaten. keith morrison: in fact, the state's forensic pathologist

testified bonnie's wounds were not consistent with an accidental fall. she had 11 blunt force wounds on her skull but no injuries on her face and few on her torso. he said no blood indicating an accidental fall was ever found on any rocks. this is a no-brainer. we have his sperm in bonnie craig. there's no dispute about this. keith morrison: this was no accident, said the prosecution. it was rape and murder, unless, as this man was about to suggest, maybe bonnie craig had a few secrets of her own. it was consensual sex. how many people had a different side to them that was different than what family and friends knew? craig melvin: coming up, the case for the defense. you're saying this young woman had a different side? i'm saying that that's a definite possibility. craig melvin: would the jury buy it? when dateline continues.

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that's formulated once again, nine tablets for just. welcome back to dateline. the prosecution had made its case that bonnie craig was murdered by kenneth dion, but his defense team had a different tale to tell. was there more to bonnie and her life than anyone knew, and would the jury be persuaded? for the conclusion of our story, keith morrison. keith morrison: when bonnie craig's raped and beaten body was found face down in a creek outside of anchorage, alaska,

it was september, 1994, and kenneth dion was a 25-year-old cocaine addict on the way down a long criminal spiral. at the time of the trial, he was 41, entering middle age, and potentially facing 124 years in prison for rape and murder. was bonnie murdered? no, she died accidentally. keith morrison: but not if defense attorney andrew lambert could help it. bonnie accidentally fell off the cliff and died. after having consensual sex with your client? not necessarily that day. could have been a couple of days before. it could have been. keith morrison: and that was the essence of it, the defense of kenneth dion, that he and bonnie had consensual sex, and a few days later, she just happened to die in a hiking accident. no provable connection between the two events, said the defense. while dion told trooper hunyor a few years earlier he had never met bonnie, his attorney was now saying the opposite, though offering no evidence

of how or when they'd met. but, after all, it was the prosecutor's job to prove rape, not his to prove otherwise. and attorney lambert scoffed at the prosecutor's argument that bonnie was too busy and too in love with her boyfriend to have had a sexual fling on the side. you've interviewed thousands and thousands of people. and how many of them were really good people that had found out had cheated on their spouse, had cheated on their boyfriend, and nobody knew? how many people had a different side to them that was different than what family and friends knew? and you're saying this young woman had a different side? i'm saying that that's a definite possibility. but it would probably be a lot harder to believe it of this particular young woman than most other people. but you never know. maybe if she met him, got to know him, initially she found him somewhat charming and was maybe enthralled with him. and then she never gets to know the history of who he is.

is that what he said happened? well, you know i can't answer that because that's attorney-client privilege. keith morrison: in any case, bonnie's death was consistent with an accidental fall, his defense expert testified. when a body tumbles, we don't know how it tumbles. injuries can occur in microseconds and not leave blood on the rocks. keith morrison: what's more, the defense attorney pointed out, not one person could place kenneth dion with bonnie or at the creek that day. there's no witnesses to say that they saw-- sure. ken and bonnie together that day. keith morrison: yeah. there were no witnesses placing him near her along her route. keith morrison: the case went to the jury in mid-june. it wasn't out for long. karen and the family were on their way to do a tv interview and-- as i'm pulling up to the interview, i see the cameraman and the reporter taking off. and they circle around. they said, the jury's back. keith morrison: the jury deliberated so fast-- just several hours-- they thought it had to be guilty.

it was incredibly exciting, because we knew that it was gonna happen. we just-- dying to hear the words. and when you did? jury foreman: we, the jury, find the defendant, kenneth dion, guilty of murder in the first degree as charged in count one of the indictment. praise god. sweet victory. it was like the weight of the world was lifted off our shoulders. he's guilty. amazing. amazing. ken dion did not kill bonnie craig and did not rape her. are you telling me that you believe your client is innocent? i am. you don't think he committed this crime? i don't. we're asking for the maximum sentence in-- keith morrison: at the sentencing in october 2011, as the prosecutor argued for 124 years, the maximum sentence, and no chance at parole because dion hadn't shown any sign of remorse-- mr. dion, as the family has pointed out, has never taken responsibility for what he's done. kenneth dion: and i never will, because i didn't do it. and that answers your question, judge.

nothing further. keith morrison: kenneth dion, as if on cue, denied it all. the judge gave him the maximum but also the chance at parole when he's about 80. is it possible he actually didn't remember doing it? i struggle with that. is it possible that his protestations are sincere and that he had an episode in his life that he has either blocked out or for some reason can't recall based on what was happening in his life at that time? cocaine puts holes in your brain, as they say. it does. amazing, though, isn't it? this is a man who got away with murder for a long time, and would have completely scot-free if it hadn't been that somebody put the dna into codis. it's really remarkable. keith morrison: which became, it turned out, the subject of karen's new campaign at the time. she joined the alaska state troopers and other law enforcement agencies trying to persuade every state to enter dna into codis, the national data bank, upon arrest.

after her push for a change in alaska, the state now enters a suspect's dna when he or she is arrested for a felony, just as it records mugshots and fingerprints. more than 30 states now have laws in place to take dna from arrestees. we need all of them to collect it. dna doesn't lie. you get to the truth so much sooner. it saves money. it saves lives. keith morrison: samantha channeled her grief. she became a 9-1-1 operator. 9-1-1. what's the location of the emergency? so when you have someone on the other end of the line who's calling in because they just found out that somebody had died and they need to know what happened, i feel that pain. i know that pain. keith morrison: and as for bonnie's older brother jason, his mission became more personal. it changes the way i raise my kids. i spend more time to make sure that they're understanding why things are done certain ways or what builds character. what really is important in life. keith morrison: sounds to me like you're trying

to grow some more bonnies. maybe. keith morrison: you miss her a lot, don't you? the ache ever go away? no. she was kind to everybody. and that's why it was so shocking that anybody could harm her. because she would never harm anybody. she was such a sweetheart. that's all for this edition of dateline. i'm craig melvin. thank you for watching. hello, i'm craig melvin, and this is "dateline." beautiful and sweet. she's just angelic. and was folded into her tight knit family, headed by an elderly religious matriarch. you were either part of their family or you weren't. craig melvin: together, they had a little girl, sidney when their marriage fell apart,