>> he made mistakes, but that doesn't make him a monster. >> was there one more card up his sleeve? >> it goes back to him thinking, i've bluffed some of the best. >> the player. good evening and welcome to "dateline." i'm lester holt. tonight, the story of a double murder that was both shocking and puzzling. there were no witnesses and few clues. the victims were a respected couple. their son, it turned out, played poker for a living. could that lifestyle have had something to do with it? the case was a mystery until prosecutors looked again at a blood-stained card, ignored in the original investigation. could that be the key? here's keith morrison. >> reporter: it was her first time in las vegas, her first look at that famous strip, its outsized kitsch, its gaudy, cavern ourselves casinos with its endless electronic pattern and their darker places where men in black suits hover over the steady calm of high, rolling, wishful thinkers. her name was adrienne salomon, and she was here on business. >> i was excited to go to get to see what this city was all about. >> reporter: adrienne came to las vegas to plan a medical conference. meeting planning was her business, a road job. >> i was probably gone 50% of the time. >> reporter: and now the job had brought her here to a vast casino, all alone. exciting, of course, though buttoned down compared to her previous, more exotic occupation, teaching the flying trapeze. >> i went to work for club med and worked for the vacation resort for seven years, went all over the world. >> reporter: i can't imagine what it would be like to have a job where your responsibility is to teach people how to relax and have fun and do it in a wonderful setting. >> it was the best job. >> reporter: in which she learned to embrace moments of fun, new experiences, and learned something, too, about how to read people, or so she thought. and now here she was april 2006, noisy casino, observing a craps game. >> a gentleman standing right to my side turned around and said, do you want me to explain the game to you? so he did. and we started chatting. and like any woman in her mid-30s is going to do, i looked to make sure he didn't have a wedding ring as he started to flirt with me a little bit. and he asked if i wanted to go to dinner that night. i said, i'm going to dinner anyway, so why not? >> reporter: her dinner date, a man named ernest scheerer iii. >> there was not that awkward silence that sometimes you have on first dates. >> reporter: ernie, that's what he called himself, was good-looking, college educated, a former eagle scout who had been raised in a mormon household. though his occupation was rather unusual, he was a professional poker player. >> kind of surprised me that someone with his background would be a professional poker player. >> reporter: of course, you had done something odd for a while, too. >> exactly. which is why i had no judgment about it whatsoever. i found it very interesting. and yeah, he said he was making good money at it. >> reporter: ernie explained how he had mastered the poker skill of cleverly hiding any tells, any clues about the cards he was holding. >> he was good at reading people which, of course, is very important in the poker world. >> reporter: he kept an apartment in southern california, he told her, but spent much of his time in las vegas. >> he gambled enough at the tables. he had a high enough status that he got free rooms and free meals, show tickets. >> reporter: and he seemed to be doing it all rather responsibly. saving money, he told her, for those times when the cards weren't so lucky. >> it was almost like somebody having a sales job. that they know sometimes they're going to get a lot of great sales, and sometimes they're not. >> reporter: she fell for ernie over the next few days of magic time in vegas. and soon a long-distance relationship blossomed. they were on the phone every day. there were trips. she to vegas, he to meet her in places like aruba and mexico. and one day ernie told adrienne he loved her. >> oh, very exciting. >> reporter: ernie traveled to adrienne's home base in north carolina several times. got to know her family, her mother, lynn. >> he was charming. and was very comfortable with us and us with him. >> we talked about marriage. we were looking at engagement rings. >> reporter: they actually talked about children. >> the first one was a girl. of course, he would love her, but he really wanted a boy. >> reporter: so it was wonderful. not perfect, of course. what is? ernie's mother, the devout mormon, did not approve of his poker playing, apparently. even though ernie's father loved poker. in fact, they often played together. >> he really seemed to like his father and respect his father. they seemed to be close. >> reporter: so why didn't they want to meet her? it was frankly a little hard to understand. >> how he explained it to me, his mother did not approve of our relationship because i was not mormon. and we traveled around together and were living a life of sin or whatever. >> reporter: scarlet woman. >> exactly. >> reporter: and when she did meet ernie's dad once, it didn't go so well. >> so we were in the lobby of caesar's. and he started to say this is adrienne. he said, i know who she is and turned his back to me. >> reporter: wow! >> i don't think i've ever been so offended in my life. >> reporter: anyway, by then the bloom had faded. it wasn't going to be a marriage or children. >> for probably the last six months of our relationship, i think we both knew that it wasn't going anywhere. >> reporter: and in february of 2008, they broke it off. so maybe that's why weeks later she didn't hear right away about what happened. >> we need emergency. we need everybody now. >> what kind of a problem? >> i don't know. >> reporter: didn't hear about the grisly double murder or that one of the victims was named ernest shearer. coming up -- was one of the victims the man she had loved? >> it didn't seem like something like that could really have happened to someone i know. >> when "the player" continues. >> reporter: adrienne salomon was putting life's pieces back together. her two-year romance with professional poker player ernie shearer once by all appearances marriage bound had deflated and finally failed. and eye couple weeks later she was in san francisco on a business trip when her phone chirped, text message from an acquaintance. >> she said, i heard about his parents. let me know if there's anything that i can do. >> reporter: adrienne got herself to a computer, went online, and saw the appalling story. >> and learned that they had been murdered. it was surreal. it didn't seem like something like that could really have happened to someone i know. >> reporter: not her ernie, thankfully, but ernie's parents. ernest shearer jr. and his wife, charlene abbendrot, murdered, found dead in their own house which was ins zejcidentally in upscale country club just up from her hotel. and now, of course, was the crime scene where even the seasoned lead detective was horrified by what he saw. >> it was probably the most gruesome, brutal homicide scene i've ever seen. >> reporter: it was march 14th, 2008, when the call came in. a country club employee had seen what looked like a body through the shearers' window. detective kirsten tucker was one of the first at the scene. >> as i approached the front door of the home, i could smell the odor of decay and blood from quite a distance away. >> reporter: and inside was like a war zone. blood everywhere. and the battered bodies of two people who had clearly fought for their lives. >> the bodies had suffered extensive, extensive injuries. >> reporter: it wasn't just the odor that told investigators the bodies had been here a while. >> there was a week's worth of newspapers that had been uncollected. >> reporter: they narrow the time of death had to be sometime between friday evening, march 7th, the last time anyone saw them, and saturday morning, march 8th. method of death, hard to be sure. no murder weapon lying around. but they had been hit repeatedly by some sort of blunt instrument and sliced by what must have been a very big knife or sword. what happened here? was it a home invasion/robbery? possible, judging from the mess. lerna shearer was a real estate investor who was known to carry cash around. detective mike norton. >> in the victims' bedroom, the drawers had been pulled out. a lot of the clothes had been thrown on the floor. >> reporter: a decorative sword was missing and two jade statues, likely expensive. but wait a minute. maybe it wasn't a robbery. >> her purse was present on the kitchen table. there was jewelry. >> in the father's pants pocket which were in his bedroom, there was a large amount of cash. >> reporter: $9,000 in cash. rolled up in his jeans pocket. and that was untouched? >> untouched. >> reporter: so was the crime scene staged to hide something more sinister than robbery? why, for example, did they find that odd and very obvious pattern of bloody shoe prints but only around the bodies? >> and the shoe prints would go back and forth to each victim. but they just disappeared. you were thinking, how did this person get out? >> reporter: still, easy enough to i.d. the shoe prints. there was an obvious nike swoosh right there in the middle. little checking revealed it was a nike impact tomahawk, big, maybe close to size 12. but who wore them? who would do such an awful thing? and why? >> in our area, we just didn't have a husband/wife in their 60s in a multimillion-dollar neighborhood killed for no reason. >> reporter: investigators poked around the shearers' background, looking really for enemies with motive. and it turned out they had some, or at least ernest did. >> ernie was a very passionate person in his views. and he wasn't afraid to let you know how he felt. >> reporter: gu houston, former california assemblyman, knew him for his extreme conservatism in his work for the republican party and on the local school board. >> he did make people angry, but it was on a political, it wasn't a personal basis. it was all political. >> reporter: besides, what happened to them was too ugly even for politics. and as for charlene -- >> i don't know anybody who didn't like her. >> reporter: here was her friend from the mormon church. >> her confidence, her command, her good heart, her ability to reach out and help people. >> reporter: which she had also been doing professionally for decades as an accounting teacher, said this colleague at cal state-east bay. >> she not only wanted to help the students with the particular subject area and the class, she also wanted to help the students with their career and their life. >> reporter: so who was responsible? who knew? not a suspect in sight. >> i instantly got my phone out and sent him a text message. >> reporter: the minute adrienne salomon heard what happened, she reached out to ernie. they decided to meet for dinner in san francisco that very night. >> even though we weren't in a relationship anymore, we were friends for a long time. i felt good that i was able to be there for him. he got really upset during dinner. i was just there to maybe be a listening board for him. >> reporter: and that was that until a few days later when ernie phoned again, very upset. >> and he said that the cops were starting to harass him a little bit. >> reporter: and again adrienne calmed him down. all normal police procedure, she told him. >> you always hear that they have to look at family first. and so that's just what they were doing. >> reporter: but ernie was a mess. asked to see her again. so adrienne arranged to meet him at her next business stop in dallas. support again. >> support again. exactly. >> reporter: but adrienne had no way of knowing what was coming or what that news would do to her. >> it was horrible. i think i started shaking. what was wrong with me that i didn't see this? >> reporter: was it about the murder? no. no, it was something else. altogether. coming up -- revelations about the double life of a man she thought she knew. >> he did it in las vegas. he did it in new orleans. >> he did it everywhere he went. >> what else had he [ male announcer ] citibank's new app for ipad makes it easy for anne to view her finances from anywhere. like gate d12 for the next three hours. citibank for ipad. easier banking. standard at citibank. is as easy as... making breakfast. omelet? sure. scrambled eggs. [ male announcer ] actually, it's easier. citi financial tools. easier banking. standard at citibank. >> reporter: when adrienne salomon learned her ex-boyfriend's parents had murdered, she wanted to be there to support ernie, especially now that he said police were harassing him. >> i knew everything about him. we dated for a couple years. of course he couldn't have done this. >> reporter: adrienne said she could meet her during her upcoming trip to dallas. the moment she'll recall with absolute clarity for the rest of her life. >> i was in a taxi headed from the airport to the hotel in dallas. and my phone rings. and it is a detective. >> reporter: she listened to him say he was investigating the death of ernie's parents. and he had a question. >> and he said, now, i know that you guys have broke up. but can you tell me how long this affair lasted? >> reporter: affair? why did he use that word? >> why would you say that? we dated exclusively for two years. >> reporter: you don't know what you're talking about, she told him. >> he said, so you didn't know that he was married and has a child? and i said, what are you talking about? and i said to him, why would i believe you? >> reporter: but by the time she hung up the phone, adrienne knew, she did believe him. >> all of the puzzle pieces came together in my head. >> reporter: suddenly it all made sense. why he never wanted her to see his apartment or meet his parents. why his dad snubbed her that time at the casino. he had been married all along. to a woman named robin and had a young son, ernest iv. and every good opinion adrienne had of him and her and her own judgment flew out the window of that dallas cab. >> i'm a smart person. how could i have not put all of these pieces together? we talked about having kids together. and he wanted to have a boy. he already had a boy. what is going on? >> reporter: things happened quickly then. quickly and painfully. >> my phone rang. and it was him. i said, listen. the cops just called. and so he asked, what did they tell you? i said, well, i know you're married. it was a name only. it's not a true marriage. and he said let me come there and explain the whole thing to you. i'm, like, i don't want to see you. please just go. >> reporter: he wouldn't. he refused. she met him in the lobby. >> and he tried to explain everything away. >> reporter: he couldn't, of course. and she sat there half listening. her equilibrium gone in a whirl of bad feeling. >> i was hurt and angry with him and myself. and it was just -- it was unbelievable to think that those two years had been a sham. >> reporter: oh, yes. and, in fact, more than one sham. a whole quilt of shams. detectives back in northern california had begun to uncover details of a double life which appeared to be, shall we say, pr prodigious. >> it seemed at every turn, there was another woman that he had had some involvement with. >> reporter: they were coming out of the woodwork. >> there was quite a few of them. >> he said he was recently single. >> reporter: like pamela dickles who responded to ernie's ad in mah of 2008 in the dating section of craigslist in las vegas. she met him for drinks. >> ernie is a person that was very nice, friendly. >> reporter: the two made plans to have dinner march 14th, 2008. but about 2:00 in the afternoon, said pamela, ernie called to cancel. >> saying that he needs to go home. that his parents' house was broken into and burglarized, and they were both murdered. >> reporter: but in the weeks after the murder, ernie's craigslist conquest resumed. >> he did it in las vegas. he did it in new orleans. >> he d it everywhere he went. and he got lots of responses. >> that's surprising? >> it surprised me that he was able to form the level of intimacy very rapidly with so many different women that he did. >> reporter: kimberly olson was one of them. kimberly formed a very intimate relationship with ernie shearer, met him in september 2008, six months after his parents' murder. she was at a casino in mesquite, nevada. >> and he came over and said he needed a pretty girl to blow on the dice at his craps table. he was a smooth talker. >> reporter: that's a line. >> it is. i fell for it. >> reporter: from day one, said kimberly, their relationship was based on honesty, full disclosure. all the dirty laundry. >> he would tell me the stories about, you know, his wife and his girlfriend and going back and forth. and i told him he was a jerk. i think he knew he made a lot of mistakes. >> reporter: of course, ernie also told her about his parents' murder. >> he missed his parents. he'd tell me stories about him and his father. he'd get teary-eyed about it. >> reporter: kimberly got to know ernie, she said, very, very well. >> if you can drive through texas with someone and not want to strangle them in the middle of texas, you get to know someone very well. he was very sweet. >> reporter: and eventually he moved in with her. did you grow to love him? >> i did. i cared for him. >> reporter: but that other woman who had loved him, adrienne salomon, was struggling. >> if he could lie to me every day for two years, lie to my family, look at rings, talk about having children together, what else is he capable of? >> reporter: but, of course, living a double life doesn't make you a double murderer. those alameda county detectives knew that perfectly well. but as they were discovering, the cheating heart wasn't the only disturbing thing about this professional poker player. turned out he had some other secrets, and he was battling some long odds. >> why did he want to get in the house so badly? >> he wanted the will. >> when "the playerntcoinues. h ring, ring. hello, progresso. it fits! fantastic! ring, ring. progresso. they fit! awesome. thank you. 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[ female announcer ] tell your story at progressosoup.com for the chance to win an ultimate makeover in hollywood. it was, to say the least, eye-opening when detectives encountered adrienne salomon and heard her account of the secret life of ernie shearer iii. >> i kind of felt, you know, he stole two years from me. >> reporter: not to mention the truly audacious extent of ernie's philandering. but this, after all, was not some tabloid smackdown. ernie's parents had been callously, deliberately murdered. not the thing at all you'd expect of a loverboy. and as detectives pored over the scanty evidence, they uncovered lots of the victims' blood but very few useful clues. >> we were looking for everything, every blood stain, fingerprints. >> reporter: and they found nothing that pointed to ernie. after all of those mysterious bloody nike shoe prints were consistent with a size 12, and ernie wore a 9 1/2 or 10. also, the csi people found in one of those prints a speck of human dna that did not belong to either ernie or his parents. now, early on, there was only that curious incident. just a little odd happened the day after the bodies were discovered. ernie showed up at the house all distraught insisting officer tucker give him entry. no can do, she said, active crime scene and all. >> he became demanding and even condescending very, very quickly which surprised me. >> reporter: why did he want to get in the house so badly? >> he wanted the will. >> reporter: he told you that? >> he did. >> reporter: his parents' will, which investigators found in a desk drawer. >> and the will indicated that their fairly significant estate would be divided equally between their two children, katherine and ernest, and that they wod receive their inheritance at the age of 30. >> reporter: did you determine how old ernest was? >> i did. ernest shearer iii would turn 30 in july. and his parents were killed in march. >> reporter: ernie's father had a couple million invested in real estate, though at the time of his death, the value of the estate was certainly shrinking right along with housing prices. still, was it even remotely possible ernie would kill his parents to cash in on an inheritance? the detectives had a look at ernie's financial situation. and you know how some professional poker players claim they win a lot? maybe not. at least not in ernie's case. >> we learned that he had 60 some odd thousand dollars in credit card debt. and he also, in talking with different casinos, he lost a significant amount of money in the tune of $80,000 or $90,000 in his play in the last year. >> reporter: though but that was not the worst of it. not even close. by march of 2008 when the murders happened, real estate in california was huffing and puffing on its race to the bottom, and six months before that, ernie, the son, wanted to buy a house in the city of breya in southern california but couldn't get a loan. banks not quite so sanguine anymore about the security of a poker player's income. so he borrowed the money from ernest the father, $616,000. but then real estate started tanking. so father ernest asked son, ernie, to go to a bank, refinance, pay back his loan. and ernie couldn't. >> he was frantic trying to refinance his home. >> and at the time that they were killed, he had missed a mortgage payment to his parents for the first time. >> reporter: so this is approaching some sort of crisis. >> that's what we felt, yes. >> reporter: so motive? maybe. investigators told ernie they wanted to talk, and he agreed to come down to the station where he explained that their suspicions were groundless. ernie had an alibi. >> there are credit card transactions and phone records of me driving back to breya, california. >> reporter: that night ernie said he was at home in southern california, hours and hours away from his parents' house. he had driven from vegas that afternoon. stopped for gas and a bite to eat at mnevada. and yes, there were credit card records to prove it. he fell asleep on the couch, watched a movie on tv and went to bed. wife and son were away, he said. bright and early the next morning, he met his elderly grandfather for a bridge tournament which his grandfather, ernest i, confirmed. still, detectives had some questions that ernie surely should have been able to answer. shouldn't he? >> so we asked him, what road did you take to get to your home? and he was not able to tell us. we asked him, what television show did you watch? he wasn't able to tell us. >> reporter: and then when she checked ernie's cell phone records, she found that unusual gap in transmission right around the time of the murders. from the afternoon of march 7th to the early morning of march 8th. 17 hours, 46 minutes. ernie's phone did not register on any cell phone tower anywhere. >> he was just a guy that was constantly talking on his cell phone. so the fact that there's a 17-hour window where he's not using it at all was definitely suspicious to us. >> reporter: but as the investigators' suspicions grew, just as they felt they might possibly be closing in on something, ernie shearer iii disappeared. coming up -- following the trail, connecting the dots. police turn up a strange story. >> he asked me if i would do something slightly illegal for $300. >> reporter: but was it the smoking gun they needed? when "datelinent han what's in a curriculum. teachers show us how the world works, give us confidence, and nurture our talents. there are many amazing things teachers can do for you the more you know. >> reporter: it was the 23rd of march, 2008. ernie shearer iii, a person of interest in the particularly violent murder of his parents quite suddenly got out of dow jones industrial average. >> he was gone. >> reporter: a guilty conscience or an innocent man fed up with negative attention from the cops? but detectives back in alameda county, california, did not panic. ernie probably didn't know it, but an enterprising officer pitted his car, his deceased father's car, with a gps tracking device. >> for the majority of the time, we knew where he was. >> reporter: and the car, plus ernie's regular visits to social media dating sites led them to a number of women he, well, met. like the one in new orleans who called the police after a strange night with a man who first told her he was writing a novel about a gambler who was a suspect in his parents' murder and who then told her his own parents had been murdered. and when she went back to his hotel room, he rigged it with bungee cords, said he rigged it in case he had to escape. >> he said he was basically going to rappel out the hotel room window. >> reporter: so did she understandably high tail it out of there? >> no, she chose to stay. >> reporter: stay the night? >> she did. >> reporter: meanwhile, the lead detective called in reinforcements. and before long, some of the boring of all police work paid off. a deputy from the local jail from the investigation pored through hours of video taken by a security camera at the shearers' country club. finally, there it was. a red chevrolet camaro approaching the shearer home at 8:27 p.m. on march 7th. and exiting at 12:42 a.m. on march 8th. just when the murders were thought to have occurred. a red chevy camaro with a black top. and wasn't that the very same make, model and color of ernie shearer's car? it sure looked like his car to a cop's eye anyway. the trouble was, she couldn't see the license plate or the driver's face. it could have been coincidence. and even that, the car and the other evidence they had gathered wouldn't be enough to persuade a d.a. to file murder charges. so the cops brought everything they knew to the forgotten woman in our story, ernie's wife, robin. she had been left behind when ernie took off a couple of weeks after the murders. had she saw what investigators had, she was not only ready to divorce ernie. she told the police she'd help them by attempting to block the poker player. >> hello? >> hi. >> hi. how are you? >> reporter: detectives recorded this phone call in which she tells ernie about the video but chooses to embellish the facts a bit. telling him his face was visible. >> the video was sent to a studio, like disney or something. it was enhanced. and it looks like you in your car. and they're basically saying that you were there friday night. were you in the bay area on friday night? because i thought you were driving back home. and there's this video that they have. and it clearly looks like it's your car. >> reporter: then a long pause. >> hello? >> i'm just thinking. i mean, is it a video like somebody's house in castlewood? is it from a gas station? what kind of a video is it? >> no, it's going into the country club area. >> going into the country club area. >> mm-hmm. and it looks like your car and it looks like you in it. >> you can see the face of the driver? >> yes. were you there? and if you were, you owe me an explanation as to why you were there. are you lying to me? >> no, i understand. i understand you're -- why you're asking the question. and obviously, you know, the police are listening to this phone call, i'm assuming, right? >> i guess. i have no idea. >> reporter: and in this game of poker, it's hard to say who was playing whom. in the end, there was no smoking gun, but was ernie spooked a little? was that why he reached out again to adrienne salomon with this request? >> i'm really hoping we can end up back together. >> reporter: he told her, said adrienne, he was thinking of changing his lifestyle, quitting po poker, if only she'd take him back. but she was a different adrienne now. >> i think i kind of felt more powerful in that conversation than i had with him in a long time because i know i don't trust a single word that he says. >> reporter: meanwhile back in vegas, detectives learned that just days before the murders, ernie shearer had made a rather unusual request of this man, his name is david mock. >> he asked me if i would do something slightly illegal for $300. >> reporter: david is a professional piano player in vegas. >> he said oh, i'm looking to get a gun because i'm a professional gambler, and i carry a lot of money. i thought, you know, no. i'm not going to do that. >> reporter: and investigators discovered ernie also asked david's performance partner to buy him a gun and offered another friend $50,000 to point the finger of suspicion away from ernie and towards someone else. and even if none of it was definitive, it all added up. and it looked bad for ernie. and so finally nearly a year after the murders, the alameda county d.a. made the decision to roll the dice. it was february 2009. kimberly olson was at home with ernie in their las vegas apartment. >> there was a knock on the door. and ernie answered the door. and i came out, and there was fbi agents with guns drawn. >> reporter: ernie shearer was charged with two counts of murder. and kimberly olson thought the whole world had gone crazy. >> he was a poker player, and he had made his mistakes, obviously, with the woman in his life. but that's a very far jump from being a poker player to murdering your parents. >> reporter: but back home in north carolina when adrienne salomon heard about ernie's arrest -- did you believe that he could have done such a thing? >> i believed that he could have. and for me, that was enough. >> reporter: a date was set for a trial based on circumstantial evidence. even though that mystery dna at the crime scene was never identified. even though not one piece of direct evidence connected ernie to any murder weapon or those mysterious nike footprints. remember, they were consistent with a size 12. and ernie wore a 9 1/2 or 10. well, and you knew that one of the lines that was coming had to be a defense attorney couldn't resist it was if those shoes don't fit, you must acquit? >> absolutely. >> reporter: and a jury might just look at that. >> and that went through my mind several times. >> reporter: and then someone noticed that little piece of paper right there. what was that? coming up -- >> reporter: so that was just kind of a shot in the dark? >> absolutely. >> and it hit its mark. a bull's-eye. >> i'm thinking, that's the ending of the book. >> but does the gambler have one more bluff in store? when "the player" continues. ♪ [ dance ] what are we listening to? 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[ chuckles ] the leap list. get going on yours... in the completely redesigned cr-v. all new, from honda. >> reporter: it was september 2010. just months before ernie shearer iii was to go on trial for the murder of his parents. prosecutors pored over the evidence scott dudek and his detectives had collected. was there anything else? anything they missed? they might use to seal the case against ernie shearer? and that's when they saw it. something quite odd. >> they came across a piece of paper that we had collected that had blood droplets on it. >> reporter: just one small piece of paper, which one of the detectives picked up from the bloody floor of the murder scene a few feet away from the lifeless body of ernie's father, ernest shearer jr. it was a warranty card for a baseball bat. that's all it was. no big deal. except when police searched through that house, searched every square inch of it, one thing they did not find was a baseball bat. >> and they just thought it was odd, why would 60-something-year-old people have a warranty for a bat? >> reporter: the warranty wasn't just for any old bat. it was for a nike baseball bat. right on the warranty card. they couldn't help but see that same distinctive nike swoosh just like the ones they saw printed on the floor in blood by those size 12 nike impact sneakers. were they on to something here? >> so they kind of backtracked. they wondered, hey, was there any kind of nike store around where we had him getting gas and the hamburger? and they found across the street, there was, in fact, a nike outlet store. >> reporter: so that was just a kind of shot in the dark? >> absolutely. >> reporter: and there it was. a nike outlet store in nevada just yards away from the gas station where ernie used a credit card to fill his tank and very close to the mcdonald's where he used plastic to buy a burger. this was maybe 12 hours before the murders. possible hitch? ernie did not use a credit card at this or any other nike store that day. so maybe he didn't buy a baseball bat to use on his parents. unless did he use cash in an effort to hide a purchase at nike? one of the d.a.'s investigators asked nike to check purchase records for march 7th, 2008. and as they say in vegas, jackpot. at 11:38 a.m., just before ernie used his credit card at the mcdonald's and the gas station, there was a cash purchase at the nike outlet. one pair of size 12 nike impact tomahawk sneakers, a new baseball bat, and junior match soccer gloves. >> i'm thinking, even the most skeptical jury in the world has to realize, put it all together. the book has just finished. that's the ending of the book. >> reporter: in january 2011, the alameda county prosecutor told jurors that ernest shearer iii was a narcissistic sociopath who savagely murdered his parents in cold blood. >> he is sheer evil. he thinks he's smarter than everybody. >> reporter: heavily in debt and desperate for money, ernie's house of cards was collapsing before his very eyes, said the prosecutor. and so he killed his parents for the money. fore his inheritance. even ernie's own family unanimously turned against him, including ernest shearer sr., ernie's grandfather, who took the stand on his 95th birthday to testify against his own grandson. his namesake. and once again, adrienne had a date to see ernie in court. they asked you to testify. >> they did. it was overwhelming and terrifying. >> reporter: adrienne told the jury about ernie's two years of deception, the double life, all of those lies. >> i made it a point not to look at him during the entire time i was in the room and during the entire testimony. >> reporter: was it enough for the jury? ernie's defense jumped to its task. arguing that the evidence, the red chevy camaro on the surveillance video, the dead cell phone around the time of the murders, asking his friends to buy a gun? all of that could have been simply coincidence. it could be explained away. and besides, said the defense, there was actual physical evidence to prove someone other than ernie committed the crime. that speck of unidentified dna found in one of those bloody shoe prints at the crime scene. the prosecution argued it was just a mistake contamination. but did it point to the real killer? as for the so-called jackpot evidence, the cash purchase of the nike sneakers and baseball bat and gloves? who knows who bought those, said the defense? but it wasn't ernie. anyway, those nike sneakers were a size 12, and ernie wore a 9 1/2 or 10. proves he didn't do it, right? and on that point, the prosecution had only this. >> he is very proficient at misinformation and disinformation. and i think that he intentionally bought shoes that were too large for him. >> reporter: ernie shearer took the stand himself, sat up there for the better part of seven days, confident, often smiling, and claiming it was his lifestyle, the prosecution put on trial. >> he's a human. he made mistakes like everybody else does. but that doesn't make him a monster. >> reporter: would he convince the jury? >> i think it goes back to him thinking, i'm at a table. there's all kinds of chips in the middle of the table. and you know what? i've bluffed some of the best. these 12 people, they're nothing compared to some of the poker players that i've bluffed, so i'm going to give it my best. >> reporter: the jury stayed out for 2 1/2 days. we spoke with one of the 12 jurors who deliberated and an alternate who sat through the case. the defense would argue that in a way, the prosecution put this man's lifestyle on trial. i mean, he was raised as a mormon. >> somebody should. >> reporter: somebody should? >> yeah. all other things being equal, his lifestyle counted against him. >> reporter: but, of course, all things were not equal. and though a couple of jurors held out for a while, in the end, it came down to this. >> too many coincidences. way too many. >> reporter: because taken by themselves -- >> yeah. >> reporter: -- they could be explained. >> they could be. but you put them all together, it doesn't work. >> reporter: and so ernest shearer iii was found guilty. two counts of first-degree murder. two consecutive life sentences. no parole. his sister, katherine, daughter of the victim, spoke publicly for the first time outside the courtroom. >> hard to have to talk about my parents and the loss. they're no longer with me at all. >> do you feel justice has been served? >> i don't know. it's hard. it'smit that anybody could do something like that. >> reporter: and adrienne salomon, the one-time teacher of the fly be trapeze, the woman who had thought she had learned a thing or two about reading people still wonders why she just didn't see it. >> i don't trust my judgment, and i don't trust other people are telling the truth, and that's hard. >> reporter: do you think you'll ever get that back? >> i don't know. i'm sure, you know, over time everything's been getting better, but i'm still not ready