crime. so why is she under the microscope? >> she's gotten caught in the middle of this crossfire, and it's really unfortunate. >> was she cheating with her executive boss? >> be with me forever. would that be normal communication between your boss and you. >> scheing widow, or suffering victim? >> there was no affair. >> hello and welcome to "dateline." he was a young entrepreneur who wanted to change the world. but someone wanted him dead. at first, no one knew what to make of this case. but a jury made it clear. this was a crime of passion. a fatal triangle involving a husband, a wife, and a boss. here's dennis murphy. >> broad daylight. pop, pop, pop. >> several shots were fired. >> a man gunned down outside a nursery school. a mini van screeching from the lot. parents and teachers recognize the man as a dad who had just dropped off his 2-year-old son. a preschool, of all places, had become a crime scene. >> we're told all the children are perfectly safe. >> the victim turned out to be 36-year-old rusty snyderman, a married father of two. his older brother steve was on a plane to hawaii when he got the shocking news. rusty was dead. >> walking around on the plane, pacing around the aisles. and i looked at -- i went to the bathroom and looked at the door, i thought about jumping. >> he was desperate to get home and find out what had happened to his little brother. he appeared at a press conference to talk about the family's incomparable loss. >> our whole family has lost its brightest light. and we don't know why. >> that was the question. why rusty? his friend, laura hester. did any of it make sense? were you able to come up with a theory of what happened? >> no. >> jeffrey moss lived across the hall from rusty at college. >> always had a giant smile on his face, no matter the situation. he used to end every conversation with, what can i do for you? >> in the tight-knit jewish community, he was called a mensch. now, the community gathered around his wife, andrea. >> they had been together since college. he always spoke about her with great affection and respect. >> they moved to a suburb of atlanta after rusty accepted a job with a software company. >> they had a great house in atlanta, a summer house out at the lake. a boat. two great kids. they were living the dream. >> a dream that was violently shattered that morning in the parking lot. the virtual execution of a young husband and father, the irrationality of the violence making it all the more terrifying. the fleeting thought, was it a hate crime? was the gunman targeting jews? the other line of speculation had to do with rusty's work. he'd once handled major amounts of money for some high-worth individuals. had an investment portfolio gone wrong? >> the initial thought was that it was a professional hit by somebody who had lost a lot of money. >> if so, was it someone known very well? maybe even a mourner, sharing his condolences with the widow? josh, an old college roommate, wondered just that. >> i remember looking around, thinking the killer could be there. >> you had that thought? >> yes. >> he had a vast network of friends and associates, and that made it all the more difficult to homicide detectives to single out that one person who could have such rage about rusty. he knew a lot of people. >> he was an excellent networker. constantly expanding his business and personal goals. >> but detectives caught a break. some of the witnesses were able to give the cops a description of the killer and his vehicle. >> it is a possible white male with a beard. 5'10", 5'11", in his 30s. >> this sketch, with a beard, and two piercing eyes. the witnesses remembered those vividly. >> come forward and face justice. don't be a coward. >> who was the man in the sketch? >> the hunt begins with one giant clue. the getaway car. caught on tape. are police close to catching the killer? >> coming up -- >> you were there when rusty got shot. >> when "dateline" continues. >>s has your moderate-to-severe eczema, or atopic dermatitis under control? hide our skin? not us. because dupixent targets a root cause of eczema, it helps heal your skin from within, keeping you one step ahead of it. and for kids ages 6 and up, that means clearer skin, and noticeably less itch. hide my skin? not me. by helping to control eczema with dupixent, you can change how their skin looks and feels. and that's the kind of change you notice. hide my skin? not me. don't use if you're allergic to dupixent. serious allergic reactions can occur, including anaphylaxis, which is severe. tell your doctor about new or worsening eye problems, such as eye pain or vision changes, or a parasitic infection. if you take asthma medicines, don't change or stop them without talking to your doctor. when you help heal your skin from within, you can show more with less eczema. talk to your child's eczema specialist about dupixent, a breakthrough eczema treatment. trelegy for copd. [coughing] ♪ birds flyin' high, you know how i feel. ♪ ♪ breeze driftin' on by... ♪ if you've been playing down your copd,... ♪ it's a new dawn, it's a new day,... ♪ ...it's time to make a stand. start a new day with trelegy. ♪...and i'm feelin' good. ♪ no once-daily copd medicine... has the power to treat copd in as many ways as trelegy. with three medicines in one inhaler, trelegy helps people breathe easier and improves lung function. it also helps prevent future flare-ups. trelegy won't replace a rescue inhaler for sudden breathing problems. tell your doctor if you have a heart condition or high blood pressure before taking it. do not take trelegy more than prescribed. trelegy may increase your risk of thrush, pneumonia, and osteoporosis. call your doctor if worsened breathing, chest pain, mouth or tongue swelling, problems urinating, vision changes, or eye pain occur. take a stand and start a new day with trelegy. ask your doctor about once-daily trelegy, and save at trelegy.com. kidney alert for type 2 diabetes! forty percent of people with type 2 diabetes will develop chronic kidney disease, or ckd. did you know ckd can lead to kidney failure and dialysis? kidney alert! ckd often has no symptoms until it's too late! help protect your kidneys. call your doctor for a uacr test. it shows one of the earliest signs for ckd. visit kidneyalert.com! rusty sneiderman had been gunned down outside his son's preschool. now with an artist's sketch and a description of a minivan, police went to work to track down his killer. here again is dennis murphy. >> the shooter was no more than a police artist rendering, no details filled in. but his victim was quite different. there was a very complete picture of 36-year-old rusty sneiderman, the loving husband, father, brother, and son who had grown up outside cleveland. his mother and father, marilyn and don. in your happiest memory, what do you see rusty doing? >> smiling and making you happy and laugh. he was wonderful to be around. >> he was a good kid. really was. >> but behind that wide grin and nice guy demeanor was a determined and ambitious businessman. rusty had spent time in the corporate world but now he was itching to go the steve jobs route. rusty's wife andrea, more than anyone, understood, and she backed rusty to the hilt when he wanted to focus on a startup. >> they were really partners in every way, shape, and form whether it was in life, whether it was through business ventures. i think they both were able to treat each other in a way that made each other better. >> and their marriage had seemed solid to people who had known them, which is why the details that came out later surprised everyone. for now, rusty's grief-stricken friends and family wanted answers, answers that seemed to be taking a long time in coming. dekalb county district attorney, robert james. >> no one had any idea who did this when it happened. >> for weeks after rusty's death, police had been floundering, trying to untangle rusty's business relationships. suspicious that he had been gunned down by a professional hit man, they were looking for a money trail to lead to his killer. chasing the money trail, did it cost you a lot of investigative hours and time? >> it cost us thousands of investigative hours and time. >> as it turned out, this crime wouldn't be solved by following the money. it would be solved by following the shooter's minivan, a vehicle that had been caught on the parking lot security cameras. weeks after rusty had been shot, investigators track the van to this rental agency and then contacted the man who'd rented it the day before the shooting. his identity would blow the investigation wide open. the man told them not only that, yes, he was the person who had rented the minivan, what's more, he said he was andrea sneiderman's boss. rusty's widow worked for this guy. was he the person in the police artist sketch? did andrea sneiderman's supervisor from work kill her husband? the boss was a man name hemy neuman, a 48-year-old middle management supervisor at general electric's energy division in georgia. at g.e., he was in charge of a multimillion-dollar budget and thousands of employees, including his hire in april of 2010, andrea sneiderman. police asked neuman to come down to the station for an interview. it turned into a 5 1/2-hour interrogation. >> you're shaking, you're stirring, you're twisting -- >> hemy neuman appeared nervous and told the interviewers repeatedly that he had been at work the day of the shooting. >> i was not there. i did not pull the trigger on the gun that shot sneiderman, rusty sneiderman. >> the cops sweated him. >> don't raise your eyebrows. i'm telling you, you were there when rusty got shot. >> a few hours into the interview, it looked as though hemy might have something to tell police. >> you're this close to telling me. >> telling you what? >> telling me why this all happened. >> but then he shut down. even so, detectives thought they had enough evidence linking him to the crime. they arrested him and charged him with murder. then an amazing turn of events. after his steadfast denials, the engineer admitted that, yes, he was the shooter. but he said he was not guilty of the crime because he had been insane when he pulled the trigger. a little more than a year after his arrest, hemy neuman's trial for murder began and the prosecutor argued that his insanity plea was preposterous. the case against him was a simple one of lust and agreed, the prosecutor argued, during the three-week trial. hemy neuman had just one prize in his sights -- rusty's wife. >> hemy neuman killed rusty sneiderman because he wanted his wife, because he wanted his money, because he wanted his life. period. >> and according to the prosecutor, the evidence would show that hemy knew exactly what he needed to do to accomplish that goal. far from being crazy, the prosecutor said, he tried to plan the perfect murder. just five months after hiring rusty's wife, hemy, the prosecutor said, started researching guns and gun shows on the internet. and around halloween of 2010, hemy neuman made his purchase. >> he told me it was just for protection, household protection. >> neuman bought a .40 caliber handgun along with 50 hollow point bullets for $375 cash from this man. the transaction took place in a parking lot. >> he seemed like he didn't know much about guns but he was interested in learning. >> within days, neuman was at a gun range blasting away for 40 minutes at a man-shaped target. nine days later he put on a disguise and crept into the sneidermans' yard. rusty spotted him and called 911. >> he's running. i think he has a gun in his back pocket. >> was this a practice run or an aborted murder attempt? neuman had bolted when rusty confronted him. still, he was back on the computer a few days later, this time searching for a local costume store, looking for another disguise. and then the prosecutors asserted the final countdown to murder began. 2:30 in the afternoon of november 17th, neuman rented a silver kia minivan. the desk clerk remembered him. >> he was in a hurry and very impatient. >> just after 5:30 in the morning on november 18th, a security camera recorded the silver minivan pulling into the parking garage on the g.e. campus. the camera then caught neuman walking up the stairs. he was headed to his office, where he logged on to his computer and left his cell phone on the desk. was he trying to create an alibi? next, hemy neuman got back in his car. he was on the move. a few hours later, surveillance video across town picked up his trail driving into the parking lot of the suburban atlanta preschool where rusty sneiderman was scheduled to drop off his son. >> coming up -- the widow takes the stand. >> he had deeper feelings for me than just friends. >> andrea sneiderman under scrutiny when "dateline" continues. i thought i was managing my moderate to severe crohn's disease. then i realized something was missing... ...me. my symptoms were keeping me from being there for her. so, i talked to my doctor and learned humira is the #1 prescribed biologic for people with crohn's disease. humira helps people achieve remission that can last. and the majority of people on humira saw significant symptom relief in as little as 4 weeks. humira can lower your ability to fight infections. serious and sometimes fatal infections, including tuberculosis, and cancers, including lymphoma, have happened, as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. tell your doctor if you've been to areas where certain fungal infections are common and if you've had tb, hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. be there for you, and them. ask your gastroenterologist about humira. with humira, remission is possible. learn how abbvie could help you save on humira. tide pods ultra oxi one ups the cleaning power of liquid. can it one up whatever they're doing? for sure. seriously? one up the power of liquid, one up the toughest stains. any further questions? uh uh! one up the power of liquid with tide pods ultra oxi. hey, angie! you forgot your phone! hey lou! angie forget her phone again? yep. lou! mom said she could save up to $400 on her wireless bill by switching to xfinity internet and mobile. with nationwide 5g at no extra cost. and lou! on the most reliable network, lou! smart kid, bill. oh oh so true. and now, the moon christmas special. gotta go! take the savings challenge at xfinitymobile.com/mysavings or visit an xfinity store to learn how our switch squad makes switching fast and easy this holiday season. returning to our story, hemy neuman confessed to shooting rusty sneiderman four times in broad daylight. but was he acting alone? here again is dennis murphy. >> day after day in court, marilyn and don sneiderman sat just feet from the man who had slain their son. the one who'd stolen away their family's peace. >> i saw a man with no reaction to anything. and i thought to myself, how can that man sleep at night? >> he is just a little weakling of a man, a little worm, i mean, just a nothing. >> andrea, rusty's widow, sat two rows ahead of rusty's parents. what andrea did and didn't know leading up to the crime would soon become a major focus of the trial. but now, as she listened to the prosecutor detail rusty's last moments, she could hardly contain her tears. the prosecutor described the killer walking up to rusty. he didn't hesitate. >> and he shoots him three times. as rusty falls in the parking lot that cold november morning, dying, the defendant's not satisfied. he walks up and he puts that .40-caliber hollow point to rusty's neck, to his jugular, and fires one last time. >> this is a brazen, outrageous crime. >> it was broad daylight, brazen, reckless abandon. rusty sneiderman was shot perhaps about 30 feet from where children were playing. >> a husband and wife testified they came running when they heard the sound. >> i went up to the victim. that's when i noticed that he was bleeding out. >> i saw him, like, gasping for air, and i wish i had started cpr right there, but we were in so much shock. >> rusty had been best man at josh goleb's wedding. the radiologist said he found it hard to hear testimony about the medical details of his friend's last moments. >> it was the fourth and final shot. that's the one that went through his neck, through his spine, through his spinal cord, and not only paralyzed him, but i think -- >> he was dead at that moment? >> yes. that's one of the hardest things for me to see. >> after delivering the kill shot, witnesses testified that neuman calmly walked back to his minivan and melted into morning traffic. within hours he was back at his desk, observed juggling routine meetings. what did he expect to happen next? the prosecution had explained how the murder had been plotted out, but now they wanted the jury to understand why. rusty was the last person standing between hemy neuman and the woman he loved, andrea sneiderman. >> on november 18th, 2010, did you know the defendant? >> yes. >> andrea offered juicy testimony for the jury to ponder. she testified that the accused, hemy neuman, had become obsessed with her weeks after she started working for him in april of 2010. that he had stalked her and her family, she said, and finally gunned down her husband. the unwelcome courtship began at g.e., she said, about six months before the shooting. >> how much time would you spend with him on a regular basis? >> there were meetings every other day, constant e-mail communications about work and projects, constant phone calls. we spoke about work things constantly. >> hemy neuman quickly became a fixture in her life. >> extremely friendly individual. caring, or pretending to be very caring individual. >> but one night during a business trip to lake tahoe, she testified, hemy neuman stepped over the line. >> did the defendant ever express his feelings for you? >> yes. >> outside a restaurant before they had dinner together, he read her a poem. >> the insinuation of the poem to me was that he had deeper feelings for me than just friends. >> she says her boss confided in her that he was unhappy in his marriage and was thinking of moving out on his wife of 22 years. but rusty sneiderman's wife said she made her position clear. >> none of those feelings were ever returned, and i made myself completely clear where i stood. >> hemy got the message, andrea said, at least for a while. and when hemy wasn't being inappropriate, she says he was a good friend. >> i admit to caring about hemy neuman. he managed to get me to care about him, and that's actually the point. he was very good at that, very good at manipulating everyone around him to feel bad for him. >> with rusty launching a company from the ground up, andrea said she felt she had to hold down her steady paycheck. she told the jury that she walked the tightrope the best she could. >> given the situation that i was in and that he was my boss, i handled them all with care and did the best i could to keep him at bay. >> did you ever report the defendant's contact to anybody at g.e.? >> no. >> why not? >> i would have been fired. >> i'm sorry. i didn't hear your response. >> i would have been fired. >> andrea had kept hemy's advances to herself for the good of her family, she told the court. but now the prosecutor wondered this. the police artist sketch released days after the shooting bore a striking resemblance to her boss. why hadn't she demanded that police focus their investigation on hemy? what was she hiding? >> coming up -- some pointed questions for the widow. >> did you wake up together in denver and tahoe? >> no. >> was there an affair? >> they were groping each other. >> did you see the parties kiss? >> yes, i did. >> when "dateline" continues. carvana just doesn't seem to understand how the test drive works. they give their customers seven days. and if they don't like it, they give 'em their money back. wait, they take the car back? that's crazy! what if it was driven by like a zookeeper? or a mud wrestler? or a guy who's on the outs with the missus and he just needs a place to sleep for seven days? yeah. (vo) buy your car online. love it or return it. with carvana. when our daughter and her kids moved in with us... our bargain detergent couldn't keep up. turns out it's mostly water. so, we switched back to tide. one wash, stains are gone. [daughter] slurping don't pay for water. pay for clean. it's got to be tide. frequent heartburn? not anymore. the prilosec otc two-week challenge is helping people love what they love again. just one pill a day. 24 hours. zero heartburn. because life starts when heartburn stops. take the challenge at prilosecotc dot com. for people living with h-i-v, keep being you. and ask your doctor about biktarvy. biktarvy is a complete, one-pill, once-a-day treatment used for h-i-v in certain adults. it's not a cure, but with one small pill, biktarvy fights h-i-v to help you get to and stay undetectable. that's when the amount of virus is so low it cannot be measured by a lab test. research shows people who take h-i-v treatment every day and get to and stay undetectable can no longer transmit h-i-v through sex. serious side effects can occur, including kidney problems and kidney failure. rare, life-threatening side effects include a buildup of lactic acid and liver problems. do not take biktarvy if you take dofetilide or rifampin. tell your doctor about all the medicines and supplements you take, if you are pregnant or breastfeeding, or if you have kidney or liver problems, including hepatitis. if you have hepatitis b, do not stop taking biktarvy without talking to your doctor. common side effects were diarrhea, nausea, and headache. if you're living with hiv, keep loving who you are. and ask your doctor if biktarvy is right for you. hello, i'm dara brown. president biden is set to address the nation tuesday as covid-19 cases spike. he will announce additional measures, and will unveil new steps the administration is taking to help communities. and elizabeth warren and cory booker have tested positive for the virus. they say they're both experiencing mild symptoms. now, back to "dateline." welcome back to "dateline." i'm craig melvin. rusty sneiderman's wife andrea took the stand in her boss' murder trial, and prosecutors had some tough questions for her. here again is dennis murphy. >> he pretended to be my friend, and i was doing the best that i can to deal with that situation. and he had my whole life wrapped up. >> jurors had heard a harrowing tale from rusty sneiderman's widow of a monster of a boss who became obsessed with his new hire, andrea. but now the prosecution was suggesting that the toxic triangle among boss, employee, and husband was even more complicated than it seemed. and that the wife, andrea, was holding back important details of her story. prosecutor don geary. there was this kind of watergate question. what did she know and when did she know it? >> we went in, we knew she was lying. we told her we knew she was lying and that didn't seem to affect her. so we knew what we had to do on the stand, and we simply did it. >> in court, hemy neuman was the accused, but at times it looked as though andrea was on trial, too. the prosecution suggested andrea had been a willing partner, not only in their relationship, but possibly in the murder itself. hemy could not be insane, the prosecutor said, if he had been conspiring to kill rusty. >> it says, "think about it, be with me forever." would that be a normal communication between your boss and you? >> the victim's widow was aggressively questioned about business trips with her boss that looked like a series of trysts with him in hotels here and abroad. a week after the trip to lake tahoe, when hemy read andrea a love poem, he joined her in longmont, colorado. >> did you pick the defendant up at the airport? >> yes. >> did you take him back to longmont with you? >> yes. >> did you and the defendant share a room in longmont? >> no. >> she denied they shared a room together in colorado but workers at the hotel remember a change of rooms. >> our records do show that andrea sneiderman during her stay switched from a room of two beds and one person to a room with one bed and two people. >> a month later, in august, something happened on a trip they took together to south carolina. something that andrea felt she had to repent for. she read aloud in court what she wrote hemy in an email. >> your apology is heartfelt but does not make the ongoing pain go away that i now have. >> what happened in greenville, ma'am? >> we were holding each other's hands, and that's it. it may sound worse than it is, but to me, that was a betrayal. >> so you're repenting in the email, at least, for holding his hand? >> yup. >> but the work trips together continue, and the emotionally charged emails intensified. hemy wrote her words like, marry me. i love you. and this. >> betrayal and anger is not about what you and we did, it's a cop-out. it's about how you felt what we wanted. how you felt when we looked at the stars in tahoe, when we woke up friday morning in denver, when you took my hand and nestled your head on my shoulder. did that happen? >> did what happen? >> did you wake up together in denver and tahoe? >> no. >> andrea might not have known it, but during this time, hemy, like a moonstruck teenager, was confiding in a real estate agent friend named melanie white. >> he would get an email from her and he would be so excited because it had a smiley face at the end of it. >> the friend testified that hemy shared with her all the messages he'd received from andrea. to melanie's eyes, andrea wasn't pushing hemy away at all. >> what i saw is that andrea wanted hemy and would lead him on, going out of town with him, holding hands with him, and eventually, from what i'm told from hemy, actually having sex with him. >> on the stand, andrea was adamant that a trip she and hemy took to england in september was strictly business, even though their itinerary included plans to see a play and hit a nightclub. >> we did not go to the dance club. in fact, we did not do any of the things that are insinuated that we did on that itinerary. >> but jurors heard evidence that andrea and hemy did go dancing on their last trip together to greenville, south carolina, a month before rusty sneiderman was killed. the barmaid at the dance club testified that she saw public displays of affection that would have justified the taunt of "get a room." >> he kept spinning her around and they were groping each other. >> did you see the parties kiss? >> yes, i did. >> how many times? >> i would say about three times. >> did you see the female push the male away? >> no. on one occasion, she actually kissed him. >> andrea denied the barmaid's account. >> did you kiss him or did he kiss you? >> no. in this case when you're talking about alleged affairs and someone else's husband being murdered, i think people tend to think they saw a lot of things. >> andrea denied all the innuendo, sharing rooms, groping one another on the dance floor. she said she never had sex with hemy neuman. a claim she repeated when her best friend shaina confronted her after rusty's funeral. >> did andrea admit or deny the affair with you at that time? >> she denied it. >> based on all of the time you've known andrea, when she told you no, did you believe her? >> no, but my heart really wanted to believe her. >> did she make a comment about if she wasn't married? >> yes. >> what did she say? >> maybe if she was not married, she would have been interested. however, she loved her husband and was not interested. >> that statement echoed something hemy had told his friend. >> what did he tell you about the london trip? >> that he and andrea got closer. he and andrea had decided that they were soulmates. he also told me that andrea was adamant that she would not leave her husband and her two kids. >> andrea was interested in hemy but would never leave her husband. that was the message rusty sneiderman's wife was sending her boss, the defense would argue. and the defense promised to prove to the jury that the inner turmoil these mixed signals stirred up in hemy neuman was enough to push this mild-mannered but troubled man over the edge and into the realm of legal insanity. >> coming up -- >> i've been kicked, i've been slapped, i've been whipped and those things you don't forget. >> haunting secrets from hemy's past. and a question, did celebrity voices drive him to kill? when "dateline" continues. what can i du with less asthma? with dupixent, i can du more....beginners' yoga. namaste... ...surprise parties. aww, you guys. dupixent helps prevent asthma attacks... ...for 3!... ...so i can du more of the things i love. dupixent is not for sudden breathing problems. it's an add-on-treatment for specific types of moderate-to-severe asthma that can improve lung function for better breathing in as little as two weeks. and can reduce, or even eliminate, oral steroids. and here's something important. dupixent can cause serious allergic reactions, including anaphylaxis. get help right away if you have rash, shortness of breath, chest pain, tingling or numbness in your limbs. tell your doctor if you have a parasitic infection, and don't change or stop your asthma treatments, including steroids, without talking to your doctor. are you ready to du more with less asthma? just ask your asthma specialist about dupixent. ♪ ♪ no two dreams are the same. but there is one van equipped to handle them all. for over 120 years, mercedes-benz vans have been built, upfitted and ready to go. because we believe dreams - should never stay that way. whose boss kills someone else's husband? i don't care, affair or no affair. there was no affair. who kills someone else's husband? >> hemy neuman was a killer. that's what the prosecutor told the jury, that's what his alleged mistress told the jury. even hemy neuman himself said he did it, a police detective testified. >> he admits to the shooting, correct? >> yes. >> but hemy neuman's defense attorney said their client shouldn't go to prison because the 48-year-old engineer, outwardly so calm and rational, had one more secret to confess. he had been tormented by demons since he was a boy. defense attorney bob rubin. >> mr. neuman's problems really began years ago, and they went undiagnosed over the course of his lifetime and, as a result, he got progressively worse. >> and the defense made a bold allegation to the jury that hemy's violent act against rusty was triggered by none other than rusty's wife andrea. >> she had planted the seed and she had stoked the fire. and she knew that what she set out to do with somebody who was sick, that she had accomplished. >> his psyche was so fragile, the defense argued, that it hadn't taken much from andrea to send hemy over the edge. and if the defense could prove that he was not guilty by reason of insanity, that he didn't know right from wrong when he pulled the trigger, there was a chance he would escape prison, if not a hospital bed in a psychiatric unit. their first witness was hemy's younger sister, monique. she painted a picture for the jury of hemy's painful childhood. >> monique, would you describe for the jury your household at 6:00 in the evening when your father was coming home? >> anxiety. >> monique explained that their father, a violent and alcoholic man, had beaten both children savagely. >> i've been kicked, i've been slapped, i've been whipped. and those things you don't forget. >> and monique said hemy took the worst of the beatings. >> my brother got up, went to get a bowl of ice cream, and before we knew it, the bowl of ice cream went flying, hemy was getting slapped, and it just kept going and going and going. >> but it was at boarding school that hemy had experienced his first delusion, this defense expert testified, a demon. >> he described the demon as much bigger than him. he said that when he felt and saw this demon, he felt anguish. deep pain. >> by the time andrea met him, hemy neuman had a history of breakdowns. and he was teetering on the edge of having another one, according to his defense. hemy's fascination with andrea began as a fantasy, according to mental health experts, something to help him escape his troubled life. but they say that workplace infatuation soon became something much darker. hemy's confidant said that it looked like andrea would wind hemy up, turning hot and then cold. >> she treated him like a yo-yo. she would have him all the way at the top, you know, just saying that this is the greatest, and we're soulmates, and having a great time out of town. and then coming back in town and texting him and saying, we can only have a business relationship, we can no longer do this. >> defense expert dr. adriana flores said this yo-yo effect strengthened the delusions that hemy was having, and in this altered state he would listen to andrea's complaints about rusty, how the children were shying away from him. >> their conversations or communication was saturated with discussions of the children, saturated with andrea sneiderman's complaints about her relationship with her husband. >> hemy thought something needed to be done, said his defense, especially when the demon, an apparition from his childhood, returned. he described it in this jailhouse interview. >> when you say big, how big? >> not as high as the ceiling. >> okay. >> but almost. >> all right. so -- >> like, towering over me. >> hemy said this time, the delusion took a surprising form. a demon appeared before him, and he sounded like barry white. >> did you think he was real? >> when he comes at me, he's real. >> okay. >> he also says he saw an angel who sounded like olivia newton-john. the angel's message, it was as out there as the vision itself. according to hemy neuman, the angel assigned him a deadly mission. andrea's children, the angel told him, were at risk from rusty sneiderman, and it was hemy's duty to kill rusty to eliminate that threat. >> he thought he was doing the right thing because he thought he was saving those children from the same kind of trauma that he had. >> but the prosecution painted a very different picture of hemy neuman. you're saying he's faking it, he's running a number on these psychiatrists -- >> without question. he was probably the smartest person in that courtroom. >> the prosecutor told the jury that hemy had lied about his hallucinations to try and get away with murder, and that the defense experts had fallen for it. >> and if he lied to you about that delusion, then everything in your report is off the table, correct? you're wrong. >> that is correct. >> the prosecutor called a parade of witnesses to the stand. hemy's work colleagues who had seen him every day. >> did you ever see anything that made you question his mental stability? >> no, not at all. >> have you ever observed him when you thought he was hallucinating? >> no. >> and according to the prosecution's own expert witness, it would have been impossible for hemy to have covered up such a serious mental illness. >> there is going to be some evidence somewhere of a marked impairment. >> nor would someone so unstable have been able to methodically plot out not only the crime but the covering of his tracks, as hemy did. >> this was just another project for him. he did it -- >> i've got a problem, i'm going to approach this like an engineer, how do i resolve the problem? >> he mathematically solved his problem. >> during that jailhouse interview, hemy explained to the prosecution's psychiatrist. >> i'm a great, great executioner. once a plan is in place, it's going to happen. >> but amid all the expert witness testimony over several days debating hemy neuman's mental health, a hypothetical question posed by the prosecution caught the most attention. >> if there was evidence that this is, in fact, a plan by andrea and the defendant to get rid of rusty so they could be together, then everything he told you would be wrong and you would be wrong, wouldn't you? >> if i knew that they had corroborated together, yes, that would change my opinion. >> this was the first time in hemy neuman's trial that a direct reference was made to a potential plot between the shooter and the victim's widow. what did andrea sneiderman know and when? >> coming up -- >> we the jury -- >> -- jurors render their verdict. but one question still lingers, is this case closed? when "dateline" continues. ere lg with type 2 diabetes are waking up to what's possible... ...with rybelsus®. (♪ ♪) rybelsus® works differently than any other diabetes pill to lower blood sugar... in all 3 of these ways... increases insulin when you need it... decreases sugar... and slows food. the majority of people taking rybelsus® lowered their blood sugar and reached an a1c of less than 7. people taking rybelsus® lost up to 8 pounds. rybelsus® isn't for people with type 1 diabetes. don't take rybelsus® if you or your family ever had medullary thyroid cancer, or have multiple endocrine neoplasia syndrome type 2, or if allergic to it. stop rybelsus® and get medical help right away if you get a lump or swelling in your neck, severe stomach pain, or an allergic reaction. serious side effects may include pancreatitis. tell your provider about vision problems or changes. taking rybelsus® with a sulfonylurea or insulin increases low blood sugar risk. side effects like nausea, vomiting, and diarrhea may lead to dehydration which may worsen kidney problems. wake up to what's possible with rybelsus®. (♪ ♪) you may pay as little as $10 per prescription. ask your healthcare provider about rybelsus® today. ♪ ♪ ♪ hey google. ♪ ♪ ♪ ♪ ♪ ♪ small businesses like yours make gift-giving possible. now, comcast business has an exclusive gift for you. introducing the gift of savings sale. for a limited time, ask how to get a great deal for your business. and get up to a $500 prepaid card with select bundles when you switch to the network that can deliver gig speeds to the most businesses. or get started with internet and voice for $64.99 per month with a 2-year price guarantee. give your business the gift of savings today. comcast business. powering possibilities. andrea sneiderman is playing each and every one of us for a fool. >> investigators had doubts about the grieving widow as soon as they had their suspect. pushing hemy neuman during his interrogation to see if he would give her up as his accomplice. >> i think this is a frame. i think it's beyond you. i think it includes someone else. >> the idea that andrea wasn't just a passive bystander to the shooting, but that she had been on it was a theory pushed hard by the prosecution and the defense. >> i was crying a lot and bawling. >> an eyewitness testified that even after rusty's body was taken away in a ambulance, she was weeping at the scene. but the wife, when she arrived, not so much. >> she didn't have a tear in her eye. i told the detectives that as well. >> andrea had testified that when she arrived at the scene that morning, she had been told that rusty had been involved in an accident. not that he had been shot. >> i didn't know what happened to rusty until i got to the emergency room. >> but listen to what both her father-in-law and her friend told that andrea told them them before she got to the hospital. >> andrea called us and she called and said rusty had been shot. she was so, so sorry. >> she immediately at the same time was screaming to me that rusty had been shot. >> how had andrea known that fact, that rusty had been shot, if no one had told her yet? and perhaps most perplexing of all, within minutes of being told something had happened to rusty, andrea had dialed and redialed her boss. but her husband, who she believed was in an accident -- >> how many times did you call rusty? >> call rusty? >> rusty. >> zero times. >> and a demeanor issue. jurors heard a tape of andrea being told police had made arrest. >> are you serious? >> can you sit down? you're making me very nervous. >> did andrea know beforehand who the shooter was? according to a friend, andrea had confided in her that she thought hemy neuman resembled the police sketch. if she had any suspicion hemy was involved, why didn't she tell the police? >> she kept seeing hemy's face in those sketches, is that correct? >> not the face. it was the eyes, is what she said. >> and those drawings were published certainly no more than two days after rusty was shot. is that correct? >> i guess. >> andrea hugged her best friend shaina as she got off the stand. but once the two women were in the hallway, out of the view of the cameras and the jurors, andrea reportedly threatened her. the best friend's lawyer says he overheard the conversation. >> andrea tells her, i understand why you did what you did, but now you're going to have to live with what i'm going to do. >> the trial judge banned andrea sneiderman from the courthouse for the remainder of the trial. but what motive could andrea sneiderman possibly have had for any of this? investigators learned she collected $2 million in life insurance after rusty's death, but would that really compensate her for rusty's lifetime earnings? was murder the only way out of a marriage that maybe wasn't as solid as friends thought? but a close friend says andrea was a victim in that courtroom. >> she's gotten caught in the middle of this crossfire between hemy and the prosecutors, and it's really unfortunate. >> jeffrey moss, who first knew andrea as rusty's college girlfriend and watched them start a life together and a family doesn't believe andrea had anything to do with the murder. >> it goes against everything i know about andrea and her morals and her behavior and her personality. >> during closing arguments, the focus was on andrea yet again. had she manipulated the mentally unstable hemy neuman into killing her husband, as the defense contended? >> the gun in this case was in hemy's hand, but the trigger, i respectfully suggest, was pulled by andrea sneiderman. >> if he and andrea -- >> or, as the prosecution argued, was neuman trying to hide behind a fabricated mental illness to avoid answering for a murder plot that he concocted with his lover? >> which one is more likely? these imaginary beings, i see dead people telling me to kill people, or was it the woman who stood to gain $2 million and he did too? he's not crazy. he's a co-conspirator. >> on the third day of deliberations, the jury announced it had a verdict. andrea was not in the courtroom to hear it. >> we the jury find the defendant guilty beyond a reasonable doubt, but mentally ill. >> the jury foreperson told "dateline" that they believed hemy was mentally ill, but nonetheless should go to prison. >> we were all very passionate that we were not going to be comfortable with hemy neuman thinking that he could actually walk. >> was there a discussion of where's andrea sneiderman, why are we not talking about her? >> for us it was still, this is not about andrea sneiderman. if there was an affair, that is between andrea and hemy neuman. >> before imposing sentence, the judge heard from rusty's killer. hemy neuman's statement was brief. >> i am so, so sorry. i am sorry from the deepest part of me, your honor. >> and then it was over for the disgraced business executive. neuman was led away after the judge sentenced him to spend the rest of his life in prison. and in a written statement issued after the verdict, andrea sneiderman said she was grateful to the jurors and felt justice had finally been done for rusty. but the prosecution wasn't finished. in 2012, andrea sneiderman was charged in the murder of her husband rusty. those charges were dropped, then in august 2013, sneiderman faced new charges and was found guilty of perjury and hindering the apprehension of a killer. in 2014, schneiderman was released from prison and completed her parole three years later. and in 2015, a break for hemy neuman -- or was it? the georgia supreme court threw out the conviction. saying the trial court erred in admitting evidence protected by attorney/client privilege. but in a 2016 retrial, a jury found neuman guilty once again, and this time his guilt was unqualified. he was found not mentally ill at the time we were definitely really close. people kept asking where my mom was and i couldn't give an answer. it just seemed wrong. it was kind of a stake in the heart. >> it was one of the most baffling cases investigators had ever seen. >> this tops the charts for most bizarre. >> no one can believe this actually happened. >> a single mom and whip-smart computer whiz who seemed to disappear.