i feel like she's around with her presence. i can hear her. she's still there. i still feel her with me. i dream about her a lot. >> that's all for this edition of "dateline." i'm craig melvin. thank you for watching. i'm craig melvin. >> i'm more or less more or lesles leless -- i'm natalie morales. >> this is "dateline." i have a lot of guilt in me. it makes me sick how i could do something like that. i am the responsible one. >> a working mom, new at the office. she loved her job and really loved her handsome young boss. >> the thing that i never wanted to face was the hurt that i was going to cause. >> a passionate 9 to 5 affair.

the problem -- she was married, and so was he. >> i grabbed his face and was like, you know what, i love you. i'm not going anywhere. just telling me what's happening. >> cheating husbands, scheming wives, suburbs are full of secrets. but being unfaithful to your spouse isn't a crime, is it? that would come next. >> oh, my god! oh, my god! >> it was just like every emotion possible all in one second. >> i went, ah, oh, my god. >> murder in the dark. who was behind it, and who would pay? >> when you see him on the video, he's armed and ready. >> two couples, two families, and this single moment that shattered it all. >> i knew one day that this was all going to come out. hello, and welcome to "dateline." it's a cautionary tale that

started with two seemingly happy couples in suburban idaho. then their lives collided in a twisted love triangle that ended with gunfire in a parking lot. the showdown left one husband dead and the other injured. for investigators, figuring out who fired the fatal shots meant untangling the relationships at the heart of the crime which were complicated. here's keith morrison with "deadly desire." >> reporter: look at this place now. so ordinary with its pharmacy, its grocery store, its carefully tended parking places so alike suburban strip malls from bismarck to bakersfield. but that night, that cold night, a heat gathered here, sweet, terrifying, doomed. >> for the longest time, i couldn't go anywhere because i'm

thinking everybody's looking at me. >> reporter: this is the story of two married couples. now the advice they can offer others now that it's too late for them. >> i think if i could tell them anything it would be put your family first. >> reporter: of course, that's not what happened. and this parking lot, there will be a body here before we're done. >> oh, my god. oh, my god. oh my god. >> reporter: careful when you stir the hot pot of desire. the place is meridian, idaho, little brother to brigger than boise. this is where they got to the end of the rainbow. it was 2016, and luck was -- 2006, and luck office their side. they had just moved from southern california, and they were happy. they were fulfilled at work. they had two beautiful children. they had everything they ever

wanted. they were rob and kandi hall, one of those charmed couples who'd fallen in love at first sight in their case, first sight meant admiring each other in the gym. >> about i think that weekend, and then we never stopped -- >> reporter: what was it about that relationship? what was it about him that was so good? >> we just connected instantly. >> reporter: by the time rob and kandi moved to idaho, they'd been together for years, had two teenage daughters. rob landed an excellent job as a computer specialist at the aida county sheriff's office specializing in vehicle locators inside squad cars. >> he loved every minute of his job. >> reporter: and as if it was a sign that this is where they belonged, candie's career as a paralegal took off, too. she was a natural. could and did sell her confidence and skills to anybody who walked in the door. >> i -- it didn't hurt she was

pretty. >> reporter: no it didn't. ander are co-worker sophia id idolized kandi. >> she was like a mother to me. >> reporter: yes, it was all just about perfect, and then who knows why these things happen exactly, they just do. and no one imagined, why would they, how this thing was going to end. eight months into his new job, rob started traveling for network. nothing unusually about that, of course. soon he seemed to be staying away a little longer than he really had to, started snapping at her, too, kandi said, about little things. not like the old rob at all. so at this point, you began to suspect something. >> yeah. i start thinking, what is going on. why are you acting like this? >> reporter: one night after a late flight in from california, rob lay down beside his wife in bed, and it all came tumbling out. >> he just started to cry.

and he said, i'm having an affair. and i laid my head on his chest, and i said, "rob, please, just fix it." >> reporter: you didn't yell, you didn't scream, you didn't cry, you didn't do anything? >> that's what shocked him. you know, the typical response is "get the hell out" -- >> you throw the clothes out the window. >> oh, no. the last person on this planet that you would think to have an affair would be robert. >> reporter: of course, it was devastating, crippling. every day she went to work and so seea saw her -- and sophia saw her turn herself inside out and wither. >> i watched her go through misery. >> reporter: did she still love him? >> yes, dearly. >> reporter: and wanted the marriage to continue in spite of the fair? >> yeah, she did. she didn't want to believe in her head that he found something in this woman that wasn't in

kandi. >> reporter: he felt bad about it agreed to go through counseling with kandi, but -- after he confessed and you said "fix it," he didn't. >> he didn't know what he wanted. >> reporter: come on, no. he wanted to keep going with the affair? that's what he wanted. >> i for sure told him to stop. >> reporter: stop right now or i'll stamp my foot and hold my breath. >> yeah. >> reporter: he kept doing it? >> yeah. he had a void because of me. that's what i was thinking. >> reporter: what do you think the void might have been? who did you think -- >> i just was boring. >> reporter: boring old kandi hall, rejected, apparently unlovable, and nearly 40. and then one day at work, kandi was introduced to a recent law school graduate who was looking to staff his new office, a boyishly handsome, smart as a whip cocky young lawyer. his name was emmett corrigan. >> my friend, she said, emmett, you've got to meet kand i. i mean shoor, she's just as pase

and aggressive as you are. she would be great for you. >> reporter: and something suddenly lifted in kandi hall. by the time those words had left her friend's mouth, kandi knew, she just knew. kandi hall has a decision to make, and it will have consequences she never intended. deadly ones. coming up -- three unfaithful spouses and their lies are piling up. >> i could hear everything he was saying because the baby monitor was on. the hard part was not a word he said was true. was not a word he said was true. [ fizz ] joining meeting.

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in boise, idaho, inside this law office in the fall of 2010

was a paralegal whose charmed life was falling apart. kandi hall was an unhappy woman, her marriage was dying or dead. her 40th birthday was bearing down like a chinese bullet train. and then one day, it got worse. kandi's boss told her she was also unemployed. my husband's had an affair, now my attorney who i work for has fired me -- >> yeah. pretty low. >> reporter: such problems. and then there was him -- emmett corrigan fixed everything. he was handsome, and he thought she was gorgeous. and of course, he hired her right away for his new law office, and, well, you know what came next. soon there were racy emails, spicy text messages. >> i would like to be put on that pedestal, emmett made me feel that way.

it was an ego boost for me. >> reporter: she wasn't trying to get back at her husband, said kandi, at least not consciously. >> i was thinking about me and only me. it made me feel good. it made me feel like i was on top of the world. roy sitting he r >> reporter: sitting here now, is kandi only thinking about kaf kandi? you can be the judge of that. there were a few hitches in her n newfound fantasy life. emmett corrigan was also married and lived in this cull deta-de- couple of miles from kandi with this woman, his wife, ashley. >> he was just a guy that everybody wanted to be around. >> reporter: enthusiastic, full of energy? >> sometimes too much energy, but that's kind of one of the things i loved about him. >> reporter: just like kandi and

jim, they also met at a gym and made a striking young couple. they were married after just six months together, made their vows before god and the church in the lds temple and -- >> like, i think i'm ready to be a parent. >> reporter: first came twins girls followed by a son and another daughter. in the winter they went ski, sledding. in the summer they camped and swam at the lake they loved. they made memories. ashley never thoughted this is how their life was supposed to be. she was pregnant with her fifth child when her ambitious husband opened his law was that fall of 2010. and made the fateful decision to ha hire a paralegal named kandi hall. than he had any idea he was sealing his face. any more than his wife ashley understood his private meetvations. did you suspect she was involved

with him? >> with emit? >> reporter: yeah. >> no. >> reporter: why? >> the way she described her as an older woman he looked up to in a motherly way. he said, he just believes in he, she thinks i'm going to be this great lawyer. >> reporter: you saw her and she was an older woman. >> she was almost 40, and i was 28. it wasn't something that i felt like a competition of i guess. >> reporter: but for the many reasons that plainly escape those who aren't seated smack on the hot stove of desire themselves, emmett and cankandi thought otherwise. they tried to keep their hands off each other for a little while, said co-workers, but if they believed they were hiding their infatuation, the messy hair, hastily rearranged clothes, they were only fooling themselves. >> i noticed a significant change in her attitude. went from being depressed about what rob had done to happy, you

know -- >> reporter: spring in her step again. >> yeah. >> reporter: such timing. now that rob seemed to want to fix their marriage, honesty funditook a holiday. >> i was living a lie. having an affair is one big lie. >> reporter: yes. she lied to herself, too. you were thinking of you and he together striding across the bow of the titanic. this is going to be it for you forever. >> yes. >> reporter: one night a couple of months into the affair, events ticked measurably toward their deadly conclusion. around bedtime, kandi received a text from emmett and couldn't hide it. >> the text pod upped up and rod said it, it said, "i wish i was there with you tonight." he was angry. kandi, what is this? i said, i don't know. so he calls emmett. rob goes why are you texting my wife at this time of night?

>> reporter: emmett's answer -- two minutes later he showed up at rob's house. they talked like dueling lovers out on the sidewalk. then rob came back inside. >> rob tossed my phone up on our bed, and he said, you win. i can't compete. he's young, he's a good-looking guy, he's an attorney, you make him a lot of money. what good am i? he was just devastated. >> reporter: now you've got yourself a pretty complicated life at this stage. >> yeah. >> reporter: of course, that february, 2011, ex-met's life was complicated, too. ashley could see how stressed he was, didn't wantunderstand it, or why he wasn't coming home. >> my son asked if he lived with us anymore. and later in the bedroom he was like, what's that all about? and i was like, well, we miss you.

and he just kind of yelled and screamed and -- and left. >> reporter: ashley thought maybe it was her fault. she went to marriage counseling. emmett refused to go. >> i had felt really pushed away and was trying to find an answer. and tried to surprise him by cleaning out his car and found a weird envelope. >> reporter: a weird envelope? >> just an envelope that was some sort of pill. i researched on line, and one of the -- one of the side effects was problems with intimacy and sexuality. i thought maybe if he was doing that that that could explain why he didn't want me. >> reporter: did you take it personally, too, though? >> you want to be everything that they want. so it was hard not to take personal. >> reporter: especially when emmett, who'd been working out more and more, announced he was going to a fitness competition in ohio on their wedding anniversary. what did that feel like?

>> lonely. he called and said, happy anniversary, i'll call you later other but didn't call back. and the night before he came home, himy oldest son who just turned 4 was screaming one night for probably two hours, "my dad's going to die, my dad's going to die, my dad's going to die." i held him. tried calling him, but he never answered his phone. it was a very strange weekend. >> reporter: strange? strange is not a big enough word to describe what was about to happen. coming up -- a secret meeting at walgreens and something will go horribly wrong. >> i said, no, we're not doing this. he's like, oh, we are doing this. ♪

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it was the 11th of march, 2011. this was it. the big event. d-day you could say. it was early evening, cold as the sun went down in meridian. cold and bleak. and in two homes in particular, it was very bleak indeed. kandi hall arrived home from work to find her husband rob packing boxes -- to leave? what other reason could there

be? >> i knew we were probably coming down to the wire. >> reporter: you're having the kind of unfair fights that married couples have all the time. they betray each other with abandon, and then wonder why it doesn't work out. >> yeah. the thing that i never wanted to face was the hurt they was going to cause on so many people. i knew one day that this was all going to come out, but the way that it usually ends up -- >> now you can only look back and wish -- >> right. >> reporter: around the same time perhaps two miles away, ashley corrigan told her husband in her desperate state of worry she asked family to pray for them. >> he said, your family? i hate your family. i can beat your brother up. i can kill all of you. i grabbed his face like, you know what, i love you, i'm not going anywhere. i don't care what it is, just --

just tell me what's happening. and i don't know, i felt like that was the last chance. and he was -- he didn't take it. he didn't open up about anything. >> reporter: that night, though, a trusted family member who'd agreed to help counsel the company called. and emmett answered the phone. >> he went back into our bedroom, and i could hear everything he was saying because the baby monitor was on. the hard part then was not a word he said was true. >> reporter: what was he saying? >> i think she might be sleeping with this person. she says i'm the worst father ever. and just things that i know i had never done. so when he walked out, i flipped the baby monitor off, and i said, oh, how did it go? it went good. he thinks you're as crazy as i do. i said, oh -- okay, well do i get a turn? he said, i don't care what you do, but you're not using my phone. emmett said, hey, i'm going to run to walgreens, and i'll be right back. i put the phone down and himmy was like, emmett, please do not

leave. he said, no, i'm leaving. >> reporter: you must have felt like your life was flying apart and you didn't know what to do. >> i kind of felt like, okay, maybe this is the grand finale. >> reporter: but he needed a wake-up call. >> he did. he needed a wake-up call. >> reporter: careful what you wish for. getting late, very dark. over the house kandi had been talking to her husband, rob. maybe he shouldn't move out, maybe they should make their marriage work somehow. and then right in the middle of that, she suddenly told him she had an errand to run, couldn't wait. guess where -- >> i said, i need to go to walgreens. i'm going to go through the drive-through. i'll be right back. >> reporter: here's kandi's explanation for the way the meeting with her lover was arranged. >> as i was pulling out of the driveway, emmett texted me, hey, what are you doing? i'm going to walgreens. he goes, i was just there. meet me there.

>> reporter: then what happened next -- you can watch it yourself right here on surveillance tape. >> i go to walgreens, go through the driveflthrough and go to hi truck and go to fred meyer. >> reporter: there they are when emmett opens the rear door. >> he pulls out out prescriptio and i swhaaid what are you taki? he said if you don't want to grow a penis -- >> reporter: they pulled off and had sex in at a street light when kandi's phone rang. her daughter coming home from a date had seen her park in the parking lot. >> she said, mom, why is your car at walgreens. i called dad. all right. okay. i'll be home in a minute.

>> reporter: too late because now the wind was up. rob, the unfaithful husband, had to know now he was the egrieved spouse. and sure enough as kandi talked to her daughter, here he was in his pickup truck come to walgreens to look for his wife. >> phone call from rob. he goes, you with emmett? and i go -- took a deep breath and said, yep, i am. emmett looks over at me, he takes the phone away from me. and he goes, "yeah, what's up, chief?" and he says, "yeah, wait right there. we'll be right there. you wait right there." and that's when i said, no, knock it off, we're not doing this. he's like, oh, we are doing this. >> reporter: there are moments in life when big choices are made. this was unnot a good -- was not a good one. coming up -- a late-night rendezvous turns

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hello, here's what's happening -- a large fire destroyed a 19th century church in new york city on saturday. the blaze began in a vacant building nearby. mayor bill de blasio called the collegiate church an icon and said the city would help rebuild. billionaire jeff bezos says that his company blue origin will take the first woman to the moon. he posted a picture of an engine test on instagram. bezos is currently competing for a contract to supply lunar landers to nasa. now back to "dateline." welcome back to "dateline." i'm craig melvin. for months, kandi hall and emmett corrigan had been having a steamy affair. but this late-night tryst would be their last.

they were in emmett's pickup when kandi's husband rob called, and her young lover grabbed the phone. now emmett was headed to a parking lot to confront rob, and soon one of them would be dead. once again, here's keith morrison with "deadly desire." >> reporter: here at a walgreens drug store in meridian, idaho, just before 10:00 p.m. on a friday night in march, 20th century 2011 -- march, 2011, there was a man onmation as you can see. rob parked his truck, went through the front door, roamed the beauty and cosmetic aisles. he was looking for his wife, kandi who, of course, was also in a pickup truck with her lover, emmett. here you see rob leaving the store, looking at kandi's parked bmw. strangely, getting back into his own pickup, pulling up, and reparking it on the other side of kandi's car.

curiously now his door out of range of the surveillance camera. this is when he made that phone call, the one in which kandi confessed she'd been with her boss, emmett, and he said to rod, "what's up, chief"? and here was the car speeding through the parking lot. still time to stop this if wiser heads prevailed, but they didn't. >> i see rob in his truck. he has just this look on his face like, oh, man. and i get out of the truck. then emmett gets out, and then rob gets out and walks over to us. >> reporter: this is just the sort of moment in which a person might have wanted to cool the overheated atmosphere. control the spitting anger. might have chosen words carefully. that is not what happened. >> rob was standing next to me like, what are you doing out with my wife at 10:00 at night?

and emmett said, rob, she doesn't want to be with you anymore, okay. she's done. really, rob, what did you make last year, maybe $40,000? kapd kandi, what did we make last week? $27,000. that's how much i make. you don't make anything. >> reporter: nasty, arrogant, like a thoughtless young buck who needed to be reminded of something. >> rob said, well, what about your kids and your wife? she just had a baby -- they're at home waiting for you. and you're out with my wife. and at that moment, emmett's eyes got huge. and he pushed himself off of his truck and went over to rob and pushed rob very hard on his chest. >> reporter: and then the climax. the confrontation that had been building for weeks. >> that's when i said, enough, that's enough. you get in your car, and rob, we got to go. and as i was walking to my car,

another car came biempt ay, and to stop. and at that point i hear pop, pop, pop. i didn't know what it was. i didn't know if the car just backfired -- i had no idea. and i stopped and went -- like, what was that? and all i see in my peripheral vision here is rob covered with blood. like someone poured a can of red blood all over him. i went ah! >> reporter: frantically, kandi found the numbers 911 orb. >> oh, my god. oh, my god. rob -- >> reporter: the pistol went flying somehow, no one disputes that. there it was on the pavement between two men. both shot. one alive, one dying. and kandi hall entered that twilight zone where memories are made that don't ever be erased. though as you and the police department and lawyers and a

judge will soon see, they can certainly be amended. what do we know for sure -- she rushed to the prostrait body of one of the two men. >> i gave him a chiskiss on his cheek. i'll never forget ever, but he took that last, you know, deep -- it was very surreal. just turning gray here to here to here. i didn't have much time to think of much other than thinking to myself, oh, my god, he's -- he's dead. >> reporter: but which one, and what just happened? a tragic lapse in judgment, a thoughtless but unintended crime of passion? or was it murder in the first degree? t degree cing a flare, but lately, have been putting off seeing your dermatologist,

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ashley corrigan did not go to sleep after her angry husband announced he was going to the walgreens in meridian, idaho. she was up at 1:00 in the morning when police dame.

emmett was -- came. emmett was dead, they told her. killed by his lover's husband. and ashley entered a twilight zone of her own. >> he was like the ultimate -- it was like the ultimate humiliation. not only is your husband gone, but you know that marriage you were trying so hard to save, here's the answers of why it was going wrong. now you don't have a marriage to save anymore. it was like every emotion possible. i went through a divorce and a death in one second. >> reporter: bizarre. >> and then i had to get prepared to tell my kids. and what story do you tell little kids? well, there's been an accident, and your daddy's spirit's left his body. he's not going to be on the earth with you anymore. n they stared at me like what are we supposed to do now? >> reporter: what now indeed? and that very moment, a few miles away, rob hall was in a hospital bed recovering from a grazing gunshot wound to his head.

the result police say of a botched suicide attempt after rob put two bullets from his semiautomatic pistol into emmett corrigan. one in his heart, one in his head. and over at the meridian police station, kandi hall, her clothes still covered in blood, was telling the first of several different versions of what happened in the parking lot. quite unprepared, of course, for the public torrent about to come down on her head. suddenly, you're thrust into the public eye big time as a jezebel a woman who is at the center of a tawdry love triangle. what is that like? >> it's terry. for the -- scary. for the longest time i couldn't go to the grocery store. i couldn't go anywhere because i'm thinking everybody's looking at me. everybody knows who i am. >> everybody knows what i did. >> yes. but it did happen, and i own it.

>> reporter: there's something else that happened. although on the night of the shooting candi rushed to kiss her dyeing lover, she rather soon was back in her husband's corner as his chief supporter. especially when robert hall was charged with premedicated first-degree murder. >> we felt that the evidence supported that he planned to go to that walgreens and do exactly what he did when he got there. >> reporter: this was no sudden crime of passion, said jessica lorello and jason spillman who prosecuted the case. >> this is a case of a man hunting down his wife's paramour and waiting 17 minutes to have the opportunity to kill him. >> thank you, your honor -- >> reporter: as they made their case for the jury, prosecutors portrayed rob as an angry man, furious about his wife's affair. a man who called emmett's law office repeatedly to berate

kandi so loudly that others heard it all. >> statements subpoena as you're a whore and why are you with him. >> reporter: the night of the shooting, prosecutes played the tapes from walgreens showing rob arriving 17 minutes before the confrontation, walking through the aisles looking for kandi. all the while with a pistol, not the one he usually carried, but the one kandi gave him tucked in his pocket. then the jury saw emmett and kandi arrive in the parking lot. and eight minutes later heard the 911 call after shots were fired. [ screams ] >> oh, my god! oh, my god! robert, robert, robert, robert! >> reporter: what happened? the prosecutor said the citizens of the shots told the story. two quick shots, a pause, and then one more. >> our theory all along was that rob hall had executed emmett corrigan with two successive

shots, turned to face his wife, attempted to commit suicide with the third shot. >> reporter: a theory backed up by forensics. the shots were fired from close range, two or three feet. reseri do on one man's hands and only on one trigger guard. >> the dna matched that of mr. hall. >> i think that rob hall went to the walgreens in order to confront emmett corrigan, that he took the loaded gun, and rob decided that was his opportunity to get his kandi back by killing emmett. >> reporter: why did he talk to emmett for eight minutes before he fired? the store was closing, said the prosecutor, people were going home. >> i think he waited until there were no eyewitnesses, and he executed emmett corrigan.

>> reporter: a night and tidy they're -- neat and tidy theory agreed the defense, but completely wrong. >> this fight started by emmett corrigan -- >> reporter: rob was a nice guy, said the defense, and it was emmett who was out of control. emmett who kept amphetamines and steroids in his pickup truck. drugs with serious side effects, said a defense expert. >> he had hyperability as well as impulsiveness, explosive temper. >> reporter: what really happened? rob didn't testify, a doctor backed his claim that because of his head wound he simply couldn't remember. so the defense offered a theory that emmett started the fight, then the gun fell on the ground. emmett grabbed it, shot rob. then during the pause, rob got hold of the gun and fired back in self-defense. the courtroom came to a halt. every head turned when a star witness took the stand to support that theory. >> would you please state and

spell your name for the record -- >> sure. kandi hall -- >> reporter: kandi who repeated the story on the stand that she told us of emmett pushing rob. emmett becoming enraged. hearing the two men scuffle as she walked away before she heard but did not see the shooting. the only problem -- she told the police a very different story the night it happened. >> tell the detective that night that you did not see or hear a physical altercation, is that right? >> i don't know. i don't remember -- >> reporter: kandi changed her story about so many things, all helpful to rob's case. >> i'm trying to clarify that your stories changed after speaking with your husband. >> things were remembered after talking to my husband. >> okay. >> reporter: in fact, later the judge made a comment outside the jury's presence -- >> he said, in all of his 30-some years on the bench, he'd

never seen a witness so thoroughly discredited. >> reporter: before she left the witness stand, kandi expressed her love and sorrow for the man she cheated on yet still loved. >> he knew, and he still knows in his heart that i've never stopped loving him. you don't stop loving someone. >> reporter: and watching it all. emmett's wife ashley. you watched as kandi testified. what was that like? >> it's hard to hear her stand up there and tell her husband how sorry she was and how much she loved him because ultimately it was because of them that i didn't get that chance. >> reporter: and rob hall's version of events -- he's about to tell you the very first time he has spoken of this. first, it's up to the jury to determine the wages. sin. coming up, a husband with a

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we have a small advantage over the jury. hall did not testify, but he talked to us, his first-ever interview, to tell us he was sorry about what happened. yes, that. but also to tell us that it wasn't his fault. >> the notion that i brought a gun there to gun down emmett corrigan. i didn't bring a gun there to gun down e mmett corrigan. >> hall's version? he didn't know that emmett was having an affair with kandi. in the parking lot, emmett was the aggressor, pulled him down behind from his sweatshirt. >> i don't think i made four steps before i was ripped off my feet. when i hit the ground, the first thing i thought was my cell phone hit the ground. it was my gun. he reached down and grabbed my

gun. we struggled over it. the last thing i remember was the gun pointed at my head and the feeling of being hit upside the head with a baseball bat. and i remember seeing everything black and gray. and that's all i remember. until sunday in the hospital. >> reporter: in that moment of extreme anger and passion, crazy things happen. and you're asking us to believe that the crazy thing that happened started when you got shot. >> yeah. >> reporter: when he pulled the trigger. >> yeah. >> reporter: and then, you must have taken the gun and fired two shots at him. >> yeah. >> reporter: of course, he had holes through his heart and one in his head, which sound, for all the world when you hear that, like those were targeted shots. is it possible you shot him and then decided you were going to shoot yourself? >> no. absolutely not. i have never been suicidal. >> reporter: the jury did hear the defense case, of course. just not robert's version of it.

but it was enough for a verdict. >> is robert dean hall guilty or not guilty of first-degree murder? not guilty. >> reporter: not guilty. hearts rose and fell. but then, not so much. >> is robert dean hall guilty or not guilty of second-degree murder, guilty. >> reporter: guilty of murder. not premeditation, per se, but of an attempt to kill, and a disregard for human life. rob hall looked like he had been punched in the stomach. tears sprang to his eyes. hall was sentenced to 30 years in prison. he will be eligible for parole in the year 2028, just before his 60th birthday. as we sit here now, being convicted of intentional murder, you're not taking responsibility for that. >> as murder, no. >> reporter: you're saying, the

architect of this tragedy emmett car gone than you. >> absolutely. yes. >> reporter: and so you, sitting in prison, for the next god knows how many years, are as much a victim as anybody else. >> it's devastating. i wish i had never gone there that night to get my wife. >> reporter: of course, you went that somehow not taking your gun along. >> i think that. i do the what if game on that. and then i think, what if he would have pounded my face into the cement and not stopped. and then, people would say, why didn't he have his gun with him? >> reporter: and thus, you encountered one of the elements of classic tragedy. the thing you buy to protect yourself is the thing you used to destroy yourself. >> yeah. >> reporter: another thing to contemplate in your jail cell

late at night. >> yeah. >> reporter: he also thinks about his two daughters, whose lives, at graduations, triumphs, marriages, children, he will never witness. two girls, who at the ages of 18 and 14 back then, suddenly found themselves left without either parent in the home. because of a final twist to this story of betrayal and retribution. rob's wife, kandi, was sent to prison herself. because of the killing? no. she pleaded guilty of grand theft, of embezzling $30,000 from the attorney before emmett corrigan. before she went to prison, she talked to us about regret. >> i had a lot of guilt still in me. a lot. and it has to do with my kids and his kids. and it makes me sick how i could

do something like that. i am the responsible one. and it's something that i don't know. are they ever going to be able to get through that? i mean, hopefully one day i can prove to them that it was just a mistake. >> reporter: in the years since, ashley has remarried and has become an author, blogger and speaker, with a message to stand strong and faithful. >> i think there's thousands of people in this country that come to those crossroads and don't know what to do. but i think if i could tell them anything, it would be, put your family first. i guess i would like to say to rob, rob, he had five kids. couldn't this have been something you pictured as you held up the gun and targeted it at his head and his heart. >> reporter: once in meridian,

idaho, were two, happy, successful families. it wasn't quite enough for some of them. and the wreckage is forever. >> that's all for this edition of "dateline." i'm craig melvin. thank you for watching. first up on msnbc, personal grieve vance grievances as the country hongs on the georgia runoffs. >> we've never lost an election. we're winning this election. if i lost, i would say i lost. but you can't ever accept when they steal and rob. >> supporters echoing his blames. >> i wanted to see my president and the next president for the next four