The problem she was married, and so was he. I grabbed his face and was like, you know what, i love you. Im not going anywhere. Just telling me whats happening. Cheating husbands, scheming wives, suburbs are full of secrets. But being unfaithful to your spouse isnt 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, hes 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. Its 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. Heres 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 couldnt go anywhere because im thinking everybodys looking at me. Reporter this is the story of two married couples. Now the advice they can offer others now that its too late for them. I think if i could tell them anything it would be put your family first. Reporter of course, thats not what happened. And this parking lot, there will be a body here before were 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 whod 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, theyd been together for years, had two teenage daughters. Rob landed an excellent job as a computer specialist at the aida county Sheriffs 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, candies 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 didnt hurt she was pretty. Reporter no it didnt. Ander are coworker 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, im having an affair. And i laid my head on his chest, and i said, rob, please, just fix it. Reporter you didnt yell, you didnt scream, you didnt cry, you didnt do anything . Thats 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 didnt want to believe in her head that he found something in this woman that wasnt 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 didnt. He didnt know what he wanted. Reporter come on, no. He wanted to keep going with the affair . Thats what he wanted. I for sure told him to stop. Reporter stop right now or ill stamp my foot and hold my breath. Yeah. Reporter he kept doing it . Yeah. He had a void because of me. Thats 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, youve got to meet kand i. I mean shoor, shes 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 friends 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. [ coughing ] [ gasping ] skip to cold relief fast with alka seltzer plus severe power fast fizz. Dissolves quickly, instantly ready to start working. Oh, what a relief it is so fast. Wthe Natural Light is amazing. Hardwood floors. There is a bit of a clogging problem. clog dancing at least geico makes it easy to bundle our renters and car insurance. Yeah, helping us save us even more. For bundling made easy, go to geico. Com whove got their eczema under control. With less eczema, you can show more skin. 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The teams been working iaround the clock. Wire,. Weve had to rethink our whole approach. Were going to give togetherness. Logistically, its been a nightmare. Im not sure its going to work. Itll work. I didnt know you were listening. 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. Kandis boss told her she was also unemployed. My husbands 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 wasnt 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 detade 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 thats 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 im 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 im 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 wasnt something that i felt like a competition of i guess. Reporter but for the many reasons that plainly escape those who arent 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 coworkers, 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 couldnt 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 dont know. So he calls emmett. Rob goes why are you texting my wife at this time of night . Reporter emmetts answer two minutes later he showed up at robs 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 cant compete. Hes young, hes a goodlooking guy, hes an attorney, you make him a lot of money. What good am i . He was just devastated. Reporter now youve got yourself a pretty complicated life at this stage. Yeah. Reporter of course, that february, 2011, exmets life was complicated, too. Ashley could see how stressed he was, didnt wantunderstand it, or why he wasnt coming home. My son asked if he lived with us anymore. And later in the bedroom he was like, whats 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 didnt 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, whod 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, ill call you later other but didnt 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 dads going to die, my dads going to die, my dads 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, were not doing this. Hes like, oh, we are doing this. Imagine the places well go. Together. Expedia it was the 11th of march, 2011. This was it. The big event. Dday 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 youre having the kind of unfair fights that married couples have all the time. They betray each other with abandon, and then wonder why it doesnt 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, im not going anywhere. I dont care what it is, just just tell me whats happening. And i dont know, i felt like that was the last chance. And he was he didnt take it. He didnt open up about anything. Reporter that night, though, a trusted Family Member whod 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 im 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 youre as crazy as i do. I said, oh okay, well do i get a turn . He said, i dont care what you do, but youre not using my phone. Emmett said, hey, im going to run to walgreens, and ill be right back. I put the phone down and himmy was like, emmett, please do not leave. He said, no, im leaving. Reporter you must have felt like your life was flying apart and you didnt know what to do. I kind of felt like, okay, maybe this is the grand finale. Reporter but he needed a wakeup call. He did. He needed a wakeup call. Reporter careful what you wish for. Getting late, very dark. Over the house kandi had been talking to her husband, rob. Maybe he shouldnt 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, couldnt wait. Guess where i said, i need to go to walgreens. Im going to go through the drivethrough. Ill be right back. Reporter heres kandis 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 . Im 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 dont want to grow a penis reporter they pulled off and had sex in at a street light when kandis 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. Ill 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, whats up, chief . And he says, yeah, wait right there. Well be right there. You wait right there. And thats when i said, no, knock it off, were not doing this. Hes 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 latenight rendezvous turns deadly. I went, oh, my god. Ill never forget ever. So whats going on . Im a talking dog. The other issue.