lot of things and i think he's still pushing us. >> that's all for this edition. i'm tamron hall. thanks for watching. i could not believe it. i couldn't imagine anyone would want to hurt her. i had no idea what could have happened. >> married to her high school sweetheart's family meant everything to her. >> there was always a lot of talk about children. she wanted grandchildren. >> but it all went up in smoke the night she died in a mysterious and monstrous inferno.

>> it was to the right of the mattresses that we found the remains of julie. >> shocking as the blaze was, it was nothing compared to what investigators found in the embers. >> it was a bullet, yes. this woman's been shot to death. >> yes. >> the obvious suspect, neighborhood thieves. >> there were half a dozen house burglaries unsolved. >> investigators also dug into a favorite theory. the husband did it. >> i was angry. i felt that the detectives were on a manhunt and they were after my dad. >> anyway, he was in another state. >> he's over 200 miles away. >> then, up popped a text that just might be a clue. >> you could say maybe she's driving events here. >> the truth beyond twisted. >> leaving behind smoking ashes and burning questions. >> i physically started shaking and started crying. i want to know why.

>> welcome to "dateline extra." i'm tamron hall. julie griffith was a loving wife and a doting mother. when a blaze ripped through her home, it robbed her life and robbed her family of their matriarch. was this an accident. a burglary gone wrong? was it something else entirely. here's dennis murphy with "consumed." >> the canterbury hill subdivision in paducah, kentucky, is a good place to raise kids. tidy homes kept up by neighbors living ordered lives. as the front porch lights went down on just another day, what happened one cold january night in the wee hours was especially alarming. orange flames were licking the tree tops. a roaring all-consuming fire was devouring one of the nice homes. >> it was awful. half of the house was gone.

>> what would rise from those ashes was far more than the far marshal's investigation into cause. there would be a probe into the deepest roots of a treachery beyond most people's comprehension. >> that's not true. no way. >> what had they all missed? >> a monster, a liar, a cheater. >> he's destroyed my entire family. >> before it became charred rubble, the house was home to a longtime paducah couple, keith and julie griffith. church going, gomp pllf playingh school sweethearts, 36 years into a marriage that had produced two sons. the older -- >> they were very supportive parents. they were loving. they loved my kids. >> aaron took after his dad, athletic, easy going, level headed. younger brother zach was more of

a firecracker like his mom. there was the time, for instance, in sixth grade zach grabbed a shovel and started digging a hole for a coy pond in the backyard. >> they said, what are you doing? i said i'm building a pond. >> were they fine with it? >> they were fine. they were like, this is going to be a nightmare. >> when aaron and zach flew the nest, the griffiths' lives only grew busier. they joined a motorcycle class through their church and frequently were a golf foursome with friends greg and temple bradley. >> everybody that knew keith loved him. great guy. >> did he become your best friend? >> definitely. one of my very best friends. >> temple felt that way about julie, too. >> she had a heart of gold. she would do anything for you. but she also wasn't afraid to tell you exactly how it was either. >> did she get people's feathers ruffled? >> oh, yeah. yeah. but everybody loved her. >> after early retirement from the water company, keith found a second career as a traveling

lawn mower salesman, which left julie to spend a lot of nights alone in the house. but keith never worried for her well-being in a safe neighborhood. their own door watched over by their beloved great dane, cleo. aaron's wife, ally. >> they didn't even lock their door. they would leave and go to dinner, or go to town, and leave the door unlocked, because cleo was the guard dog. >> fulfilled as the griffiths' lives seem to be, keith and julie were transformed when aaron and alli brought into the world their first daughter. >> when i had the first child, it was the greatest day of her life, i think. >> julie lived for my little girl. she wanted to be a part of everything that she did. >> and julie was there for alli when she went into labor with their second daughter. her white-knuckled dash to the hospital earned julie the affectionate nickname of nascar nana. >> the flashers were going and she was honking the horn. >> she said, don't have the baby in the car.

keep your legs crossed. don't have the baby in the car. >> everything seemed to be going great for the griffiths in 2013. keith had weight loss surgery and dropped more than 100 pounds. julie was over the moon with two granddaughters. but also that year came the rift. zach disclosed to his very religious conservative parents that he is gay. >> it went from my mom is my best friend, in talking to her, multiple times a day, to just being completely -- just completely shut off. >> julie visited zach that fall. they tiptoed arndt the elephant in the room, but the time together gave zach hope. >> was that the step as you look back to patch things up between you and your mom? >> yeah. there was definitely a way forward, we just needed more time. >> then came that cold night in january. >> 911, what is your emergency? >> there is a house on fire in canterbury and there's not a

fire truck here. >> a deputy drove toward the griffith home, his dash cam recorder catching a quick glimpse of the blaze. then the fire trucks arrived. matt carter received a call in the middle of the night. this is a bad fire. >> the house was just completely consumed with fire. >> it took about an hour for firefighters to knock down the flames. hours more for them to make their way through the blackened wreckage of the house to what seemed to be the heart of the fire. the master bedroom. ghastly what they would discover. >> coming up, what they found in the embers would rattle the neighborhood and shatter the family. >> everything was just consumed by fire to the point that things were unrecognizable. >> investigators make a pair of discoveries, and realize they're dealing with both a tragedy and a mystery. >> he had recovered a projectile. >> a bullet? >> yes. >> when "dateline extra" continues.

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welcome back. life seemed so full for julie and keith griffith. they had a loving family, and an active social calendar. then a devastating fire left their home in ruins. and when investigators searched for a cause, they made an awful discovery. here again, dennis murphy, with "consumed." >> day break revealed the grim aftermath of the blaze at 307 tudor boulevard. wisps of smoke rose that was once the griffith home. detective matt carter. >> this entire structure had crumbled. it was a pile of ashes that was on the ground. we didn't even know if anyone was home or not. we knew that they were in and out of town a lot. >> as firefighters carefully

walked through, what appeared to be the fire's epicenter, the master bedroom, their worst fears were confirmed. julie had in fact been home that night. >> it was to the right of the box mattresses that we found the remains of julie. they were unsure initially that it was human remains. >> even with all their experience? >> yes. everything was just consumed by fire to the point that things were unrecognizable. >> as for keith, he was away, calling on customers in indiana. word of julie's death spread almost as fast as the fire had raced through the house. >> i'm getting ready for work. have the tv on in the background. >> we're on tutor boulevard -- >> then temple bradley's phone rang. it was a friend who also knew julie. >> she said, you know there's a fire. i said, yeah, i saw it on tv. she said, yeah, it was keith and julie's house. and i just sat there.

>> did she know at that point that julie was in fact gone? >> she knew. so she told me. >> temple's husband immediately tracked down keith as he was making the three-hour drive home from indiana. >> he said, i'm on my way. i'm probably, you know, two hours away. i said, are you all right? he said, yeah, yeah. i could tell he was in shock. >> the news hit zach griffith particularly hard. since coming out to his mother, his relationship with her had been strained. and now this. >> i guess you're just beating yourself up something terrible that you had been sideways with her. >> yeah. and i know if we were just given more time, that we would have been close again. that we would have been, you know, that mom and son duo that we were. but we just -- we didn't have the time. it was ripped away from us. and never get it back. >> aaron, the elder son, had more of a take-charge reaction. >> got to take care of my brother, take care of my dad. >> you've got logistics.

>> kind of the way my brain is wired, i guess. >> within hours, the griffiths would head from all directions toward what used to be an anchor in their lives, the family home. >> just gave my dad a big hug and we were both crying. i can't believe this. what happened? >> keith's good friend was there to lend his support. >> this is the first time you were able to see him eye to eye. >> i could tell he was shaken. >> as if the news couldn't get any worse, their great dane along with another set daisy had perished in the flames also. they walked the property, surveying the damages. >> we get to the coy pond. got to get those fish out of there. julie would kill me if something happened to those fish. i was like, you know, let's not worry about that right now. >> overwhelmed by loss, the griffiths were faced with the question, how could this have happened? >> the first thought was that it was the new heating and air unit. it had just gone in.

>> the unit had been installed just days before the fire adjacent to the master bedroom. >> that was my first thought, that somehow the new heating and air unit wasn't put in properly. >> faulty installation? >> yes. >> as for the cause of julie's death, that was left to the county coroner's office. deputy coroner, ben bradford. what were you working with? >> a very charred body. i could not very well identify it being a person. >> the cause of death seemed obvious. but just to be sure, julie's remains were sent on to the medical examiner for an autopsy. what he discovered was as deeply troubling as it was unexpected. >> he had recovered a projectile in the remains. >> a bullet? >> yes. >> suddenly what was thought to have been death by smoke inhalation was now a homicide. closer examination revealed three bullet holes in all in julie's torso. the deputy coroner immediately called the sheriff's office. >> i said, we need to get some people back to that house, because this is going to be a

homicide. >> what did you think? wow? >> absolutely. >> lady in a nice neighborhood, good house. now she's got three bullet wounds. >> on a who-did-it crime. >> back on 307 tudor boulevard, fire equipment pulled in as sheriff's cruisers pulled in. with the charred wreckage of the home once filled with joy and laughter, would it now hold clues pointing to a killer. coming up, could julie's murder have been a burglary gone bad? >> somebody is looking for the laptop or whatever, jewelry. >> right. >> and then, this detective spies what could be a critical clue on someone's phone. >> up comes a text message? >> that's correct. >> when "dateline extra" continues. if a denture were to be put under a microscope, we can see all the bacteria that still exists. polident's unique micro clean formula works in just 3 minutes, killing 99.99% of odor causing bacteria. for a cleaner, fresher, brighter denture every day.

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but when we brought our daughter home, that was it. now i have nicoderm cq. the nicoderm cq patch with unique extended release technology helps prevent your urge to smoke all day. it's the best thing that ever happened to me. every great why needs a great how. welcome back. as julie griffiths' friends and family struggled to cope with her death, the county coroner made an alarming discovery.

the grandmother had been shot three times. was this a random act, or did julie know her killer? with little evidence to go on, detectives wanted to talk to her husband. and that's when they stumbled across a curious clue. back now to dennis murphy with "consumed." >> the theory that julie died by accidental fire collapsed as suddenly as the griffiths house itself. for detective matt carter, a slug recovered from julie griffiths' torso, turned the charred rubble into the scene of a homicide crime. >> it changed a lot. >> despite more than a decade on the job, the detective had his work cut out for him. no hair fiber, bloody footprints, none of that stuff. >> you've got an arson that destroyed any chance of obtaining any of that from the scene. >> for detective carter, the most obvious theory, this homicide was the work of a home intruder. >> a burglary gone bad. >> somebody looking for the laptop or whatever jewelry and it goes down.

>> right. we had burglaries within a few miles of this area. >> within weeks, or months? >> within weeks. >> as police canvassed the neighborhood for leads and witnesses, the investigator also had to consider the perpetrator may have been someone julie knew. >> you're not ruling anyone out or in. you're simply going through the motions. you're speaking to the immediate family first. working your way out. >> the sheriff's department did not tell the griffiths julie had been murdered. >> we were not told anything by the police. at that point. >> but anyone at the scene might have guessed foul play was somehow involved. >> there was just cops all over the property. >> you said, why the cops? >> exactly. >> naturally the first person detective carter interviewed was julie's husband, keith. >> we're sorry for your loss. >> appreciate that. >> at first keith talked about what everyone perceived was the cause of the inferno, an

accidental fire set off by a new heating unit. >> you had a new gas pipe put in tuesday. >> yeah. it was a whole new system. >> keith explained the contractor was a friend of his who had done the work just a few days earlier. >> they put a rush on it. you know, kind of what friends do for each other. and i hope to god that this problem is not his. >> but eventually without giving details, the detective revealed julie's death was no accident. >> investigation shows that foul play was involved. i do not believe at this point in time that this was any kind of an accident. i want to ask your cooperation on several things, okay? >> okay. >> one of the first things detective carter asked about was how keith and julie were getting along. >> any problems at all? >> nothing like that whatsoever. she's my best friend. i mean, that woman loved everybody. >> the investigator also asked

keith for details about his business trip to indiana. >> what hotel? >> comfort suites. >> didn't leave the hotel? >> i did leave the hotel about -- about 11:00. i went and got something to drink. and i left again about 4:00 and just went and got a doughnut and a coke. like i said, i get up pretty early. >> what about weapons? did keith own a gun? >> i have a .45 in my work truck that i just got. it's never had any -- it's never been loaded. >> as part of standard protocol, the detective asked for keith's clothes. they would be tested for gunshot residue. >> what you're wearing now, is that -- was that fresh clothes from this morning, whenever you -- >> i wore them yesterday. >> before wrapping up the interview, the detective took a look at keith's cell phone.

>> while i'm reviewing his phone, i see he obtains a text message, an incoming text message from a lady by the name of deanna james. >> ping, up comes a text message? >> that's correct. >> the message read, did you make it home okay? keith was quick to point out his relationship with deanna was completely platonic. >> she's more like a guy friend. >> no big deal? >> that's right. >> after that, keith was released to go and grieve with his family. detective carter, meanwhile, set out to verify keith's story. >> he had a receipt where he'd stayed. >> that puts him three hours away from this house fire. >> right. it showed his check-in time and check-out time. >> a quick check of keith's gun showed he was telling the truth about it as well. the gun looked as though it had never been fired. maybe he's not the guy? >> he may not be. >> then who was? coming up, the detective sits down with deanna. was she really like a guy friend to keith? >> you could say, what, maybe she's driving events here? maybe she wants to get rid of the wife? >> that's correct.

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hi, richard lui with your top stories. hermine continues tathreaten parts of the eastern seaboard. regain hurricane strength causing major storm surge from virginia to connecticut. republican vice presidential candidate mike pence tells nbc's "meet the press" he will release his tax returns next week. pence saying donald trump will also be releasing his returns shortly. though when pressed he said the trump returns would only come out when an irs audit has been returned. now back to "dateline extra." welcome back to "dateline extra". i'm tamron hall. as investigators questioned

keith griffith, the grieving husband got a text that sparked their interest. it was from a woman. but was she just a friend as keith explained, or was the traveling salesman hiding a secret? here again is dennis murphy with "consumed." >> julie griffiths' family had hardly had time to absorb the horrific news of her death and house fire, when rumors started reaching them that investigators thought her death was foul play. the sheriff's department kept details of the murder quiet for days. >> i could not believe it. >> daughter-in-law alli. >> i couldn't imagine anyone would ever want to hurt her. much less set the house on fire. the dogs perished. i had no idea what could have happened. >> no enemies. i mean, it made no sense. just who would want to kill her. >> after keith was released the night of his interview with detectives, he headed straight to his friends', the bradleys. they were floored to hear the line of questioning that he recounted. what was up with his marriage,

his alibi, the gun he owned? >> he had been questioned to the point that he almost felt like they thought he had done this. >> aaron got called down to the station that same evening. he, too, was questioned about his parents' marriage. >> notice anything lately in their relationship as far as any problems or anything like that? >> no. >> or anything on -- >> nothing. >> was there any money troubles, was there any relationship things that we knew of. >> but to a person in the griffiths' circle, the very idea that keith might know something about julie's death was, well, just flat-out crazy. >> i knew he didn't do it. >> there wasn't any way that keith was involved in this. >> i remember sitting there, and looking over at keith, just watching him for a while. and finally i said, you can't even grieve, can you. and he said, no, they're taking it all away. >> the friends' working theory was a botched break-in.

they had heard about the neighborhood's recent rash of burglaries. maybe that's what happened to julie. >> they come in, and they startled cleo. >> the dog started to bark. >> caused julie to wake up and got scared and shot her. >> it made perfect sense. >> but for detective carter the burglary theory of the crime wasn't panning out. even as they sorted through the rubble, detectives at the scene found up touched valuables, two safes, a cache of guns and julie's purse sitting in plain sight. >> you would think an intruder would grab it. >> you would think so. >> carter set out tafollow the most promising lead he had. who was this woman deanna who wondered if keith had made it home okay. he had described her as a guy friend. >> there was just something about that text message that seemed to stick out, and it seemed to create that question of, you know, what's missing here.

>> carter had called ahead to the authorities in the indiana town where deanna lived. they had arranged to bring the woman down to an interview room. she was waiting. >> my name's matt carter. >> deanna was about to tell the detective a story that would dramatically reshape his investigation. >> is she a guy friend? >> no. it was more than that. >> deanna shared the same story with us. >> he wanted me to love him. >> deanna said she and keith first met years earlier at a vendor fair. she was the cfo of an i.t. company, keith the road warrior lawn mower salesman had a booth there. >> keith was sitting there. i guess i caught his attention right away. >> you noticed him. >> i noticed he was staring at me. i just smiled. >> she says he asked her to dinner. they quickly discovered how much they had in common. >> he talked about both his sons and being a grandpa. so i just really connected, because i had grandkids, too. >> after several dates, deanna says, keith expressed interest in a relationship.

but she wanted to keep it just friends. they stayed in touch, but didn't see each other for a while. then just a few months back, he sent her a flirty text message. >> the text just said, did you cast a spell on me? i'm like, what? he said i was in a party last night and this woman was chatting me up. and he said all i could think about was you. >> deanna who was in the throes of a traumatic romantic break-up agreed to start seeing him again for dinners. and she says, he seemed excited to show off the new post-surgery keith. >> he said, you're not going to recognize me. he said, i lost over 100 pounds. i said, you have? >> did he look okay? >> he looked fine. i think he was more confident as well. >> deanna says keith now began aggressively courting her, showering her with gifts, flowers, notes of affection. it was all, she said, a bit much. >> he kept pushing for more.

and i kept telling him, you need to slow down, because i'm just not there. >> deanna said she couldn't put her finger on it, but there was something about keith that was holding her back. maybe it was the fact that he still seemed unusually bound to a woman he called his ex-wife. from the very beginning, deanna says, keith told her that he was divorced. >> very first conversation. >> i'm a divorced guy. >> right. >> by the time she was sitting across from detective carter in that interview room, deanna said she and keith had never been intimate, but they were dating. and keith was talking long-term. house-hunting for them. >> he said, i don't want to scare you, but i want you to know that i'm looking for properties here in morrisville to buy, so -- for us to be together. >> for the detective, deanna's story put a whole new spin on the investigation. keith griffith now seemed like a man with a very big secret. or thinking like a homicide detective, was she the one with the secret. >> you can spin it another way

and say maybe she's driving events here. maybe she wants to get rid of the wife. >> that's correct. we were open for that being an idea, or a possibility. >> in fact, the detective had let her tell her story without explaining the reason for his visit. now he laid out his cards. >> was he not divorced? >> no. >> he said, first of all, keith's not divorced. according to him, keith had been married to his high school sweetheart for 36 years. and i just broke down, because i -- i couldn't believe it. >> but, of course, there was more. >> we're conducting an investigation, and this investigation involves what we believe to be a homicide of his wife. >> i was in shock. i felt like, oh, my gosh, i can't believe what he just said. i had no idea. >> so you believed she had been

played by this guy? >> i believe that she had. >> so detective carter wondered if keith griffith had manipulated and lied to this woman, had keith lied to him, too. maybe it was more about what keith hadn't said. rewind to that moment when the detective had dropped what should have been devastating news on keith. >> the investigation has shown that foul play is involved. >> okay. >> did he ask you the question, what happened? what are you telling me here? she was killed? >> no. >> you'd expect that, right? julie was shot by an intruder? what's going on? >> right, there was no questions to that. >> if keith griffith was somehow involved in his wife's murder, how on earth had he pulled it off? after all, he was hundreds of miles away at that hotel the night of the crime. unless, of course, he wasn't. coming up, a security video surprise. >> scrolling through the tape. >> going through, going through. >> and then when did your bingo moment come up? >> and then a twist rocks the

entire griffith family. >> we were all frantic. we had no idea how it could have happened. >> when "dateline extra" continues. there's a denture adhesive that lds strong until evening. fixodent plus adhesives. just one application gives you superior hold even at the end of the day fixodent. strong more like natural teeth.

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it's the best thing that ever happened to me. every great why needs a great how. welcome back. here once again is dennis murphy with "consumed." >> six days after the cold blooded murder of julie griffith, family and friends gathered at her church to say good-bye. between the visitation and the memorial service, son zach was overwhelmed. >> just showed what an amazing woman that my mom was to have that many people come out just to say that, you know, they just wanted to give their condolences. >> to close friends craig and temple bradley, keith was more

emotional that day than they'd seen him. >> tears, sadness. i'd never seen him cry, you know, in my life. >> but even as the griffith family mourned, zach and his brother were feeling uneasy about the investigation which seemed to be focused exclusively on their father. >> i was angry. i felt that the detectives, the sheriff's department were on a man hunt and they were after my dad. >> because the husbands always do it? >> yep, the husbands always do it. and they just seemed they zeroed in on him and were going at it 110 miles an hour. and were not respectful to my brother and i about any of the developments or anything going on. >> but detective matt carter had an ongoing investigation, and he felt there was ample reason to pursue their dad. after his interview with deanna, he had driven to the hotel that was keith's alibi. there he uncovered a bombshell. remember keith saying to the detective he had been at the hotel the entire night, ducking

out just twice to get a drink and a snack? when the detective hit play on the hotel security video, it told a vastly different story. keith is seen leaving as he claimed around 11:00 p.m. but -- >> i think within 15 to 30 minutes he's going to be returning. that never happened. >> you're scrolling through the tape. >> going through, going through. >> and when did your bingo moment come up? >> he finally arrived back at the hotel six hours and 34 minutes after he had left initially. >> gone for more than 6 1/2 hours. was that enough time for keith to drive all the way back to his house in kentucky, commit the crime, and return? >> so what did you and your partner find when you put a clock to it? >> driving the speed limit to and from, it would have allowed approximately 20 minutes, at least, to have committed the crime. >> is that enough time for him

to do this lethal act, kill his wife and torch the house? 15, 20-minute window? >> yes. >> keith griffith was arrested charged with arson and murder. he could face the death penalty. he pleaded not guilty. >> we were all frantic. we had no idea what was happening, how it could have happened. because at that point we knew there was no way that he had anything to do with it. >> this is nightmare country? >> yes. but again, we thought it would all be explained. they would do their job, they would take him, and the truth would come out. >> i was 100% convinced that he was innocent. and they were taking the wrong person in. meanwhile, the person who actually did it was getting away. >> family and friends were for sure distressed to learn that keith had another woman on the road. but the revelation wasn't enough to shake their support for him. >> it was a shock. but it was something that we accepted as a mistake. but that did not mean that he killed julie. >> there's no way he did it.

not to julie, his wife. >> yeah. >> no way keith did it. >> when keith griffith went to trial in february 2015, prosecutor raymond mcginty laid out a formidable circumstantial case. >> on january 17th, 2014, keith griffith decided that he could kill his wife -- >> a cornerstone of the case was that hotel security video. not only did it show keith gone for enough time to commit the crime, the prosecutor said, it also caught him in a lie. remember in his interview, keith told police he had not swapped clothes that night. >> no. >> a look at the security footage showed he had. >> he wearing one set of clothes, one of his work shirts. he came back dressed in all black. >> the prosecutor also showed security video captured from a residence near the griffith home. it caught a glimpse of an suv

pulling into the subdivision shortly before the fire. >> it was a little blurry. it was a few seconds long, but it sure looked like keith griffiths' car. >> and another circumstantial bit, who else but keith the prosecutors said could have gotten by the griffiths' aggressive great dane cleo? >> the dog and keith were very close. a burglar couldn't have come in. a family member could have. >> as for the why question, how could keith, a man who by all accounts loved his wife, actually do it? the prosecutor turned to two age-old motives. >> almost every case involving a husband and wife, it's lust and greed. one or the other. this one had both. >> the lust part of the equation, he said, was deanna. >> raise your right hand -- >> she took the stand and told the jury that not only was keith house-hunting for them, he was also making plans to bring her down to paducah for a concert and introduce her to his family. >> i would love for you to stay for the weekend. we'll go to the concert and i

would really like for you to meet my dad. >> as for the greed part, that was life insurance money. two policies on julie's life worth $250,000. one of them the prosecutor said had taken effect just eight days before julie died. >> keith griffith got to the point in his life he just wanted to start something new, and he didn't want to give julie griffith she would have needed in a divorce and would have been entitled to. >> keith's daughter-in-law listened to the entirety of the prosecution's case and all she heard was theories. >> they told a story how they wanted it to go. and they had facts that supported their story. but did not prove it. >> and that's what keith's defense attorney, mark bryant, hammered home for the jury. >> what does no evidence mean? >> they didn't have dna. they didn't have any kind of forensics. they didn't have a confession. they had nothing. they had circumstantial evidence. >> in their haste to arrest keith, the defense argued the

police had gotten it wildly wrong. yes, he conceded keith wasn't the husband of the year. but he said deanna's story that keith was pursuing her for a long-term commitment was nonsense. >> what he wanted was a port in every storm. >> as for the life insurance, $250,000 was far from a financial windfall, he said. even the bradleys knew that the reason keith and julie bought that new policy was because of a friend's recent tragedy. >> she had been nagging him about getting -- making sure they had plenty of life insurance. >> and he argued that the footage of the suv pulling into the subdivision was far too blurry to i.d. it as keith's ford expedition. besides -- >> if a guy is going to go to this much trouble to kill his wife, why would he drive an expedition that everybody knows he has. >> but the big question still remained, if keith hadn't driven back to paducah to kill julie, where had he gone the night of

the murder? the only person who could anxious that is keith himself. >> he was very adamant about taking the stand. >> he wanted to talk to the jury? >> he did. >> what would he say? and would the jury believe him. it was roll the dice time. coming up, keith's eyebrow-raising alibi. >> i was embarrassed and ashamed of what i was doing the night my wife died. >> and then what keith revealed to us. >> that's what i've told everybody, when they hear the story, they're not going to believe it. why even a jury couldn't end this case. when "dateline extra" continueso . with this grade of protection... it's a fortress. and with this standard of luxury... it's an oasis. introducing the completely redesigned e-class. it's everything you need it to be...and more.

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welcome back. the prosecutor laid out his case against keith griffith that he had the means and the motive. now, the accused murderer was insisting on taking the stand in his own defense. and he had a bombshell to reveal. here's dennis murphy with the conclusion of "consumed."

keith griffith was about to take the stand and explain the most damning piece of evidence against him. hotel security footage that put him off the grid for more than 6 1/2 hours the night his wife julie was murdered. but if he wasn't perpetrating the crime during that time, then where was he? >> tell us name please, sir. >> keith wayne griffith. >> keith's explanation came with an embarrassing secret. his lawyer argued that ever since becoming a traveling salesman, keith had struggled with an addiction to sex. >> keith, until you got out on the road several years ago, did you have this kind of a sexual addiction? >> no, sir. >> and the night julie was murdered he said he spent those hours out prowling for women. after he left the hotel, he changed out of work clothes into his man out looking duds. >> didn't like people to put my job with my carousing. >> with your carousing. > uh-huh. >> he says he went to a massage

parlour, a bar and couple of strip clubs but try as he might, he never found a hookup. >> i was trying to pick somebody up. wasn't anybody available or interested or however you want to put it. >> after last call earnings said he went down to the river to watch the boats before returning to the hotel to catch some shuteye. as for why he lied to the police -- >> i was embarrassed and ashamed of what i was doing the night my wife died. >> did you kill your wife? >> no, sir, i did not. i loved my wife. >> did you burn the house down? >> no, sir. >> did you kill those dogs? >> no, i loved those dogs. >> when the case went to the jury, keith's friend craig bradley didn't know which way the jury would fall. >> i didn't know if he would get acquitted but i didn't think he'd get convicted. i really felt like it would be a hung jury. >> turns out, he was right. after six hours of deliberation, the jury was deadlocked. >> i'm going to declare a mistrial at this time. >> keith would sit in jail for another year as he awaited a

second trial. a long time for his family to process the story he told on the stand. >> he left to go to a bar to go cruising or something? and then he goes and sits on the riverfront? like, he has never done that before in his life. >> so when he stepped down, you thought -- yeah. >> your father did this thing. >> yeah, i mean, i definitely wasn't saying it out loud and i wasn't ready to accept it, but i definitely was moving in the direction of the only thing that makes sense at this point is that he committed the crime. >> after months of wrestling with his thoughts, zack decided it was time to send his dad a letter. >> i said in the letter my opinion was that you did it. you know, you took away the last chance that i had at rebuilding a relationship with my mom. you know, you're no longer allowed to contact me. and i don't want you to ask about me to anyone. >> wow. dear dad, you are dead to me. >> exactly. >> his brother's wife ali had started to feel that way about keith, too. >> it seemed like he was fabricating everything that came

out of his mouth. >> but there was a split in the family. despite doubts of his own, her husband, aaron, the one closest to his father, was still a supporter. >> whatever issues my mom and dad would have had, i just could not believe that my dad would take my kids away from their nana. >> then a few months before keith's retrial -- detective carter's phone rang. there was news from the jail. an inmate had some information about keith. and it was as eerie as it was chilling. the detective in the bull's eye. >> keith had come forward to him wanting to have me killed. >> to put a hit on you. >> put a hit on. >> orchestrating your death. >> yes, he had drawn a map of what he believed to be my residence, suggested the caliber of weapon to use to kill me, the informant specifically asked him what if my family was present and his response was one word and that was tragedy. >> wow. that does make the hair on your neck stand up.

>> it does. >> that wouldn't look good to a jury. the development brought aaron to a tipping point. >> were you no longer wavering at this point? had you come down on the side of oh, my god, my father killed my mother? >> yeah, yeah. >> now aaron too wrote his dad a letter. if he was guilty -- >> it's time. it's time to man up and do what you should have done two years. ago. >> keith's defense attorneys went to the prosecutor to hammer out a plea deal. they agreed on 30 years in prison for the murder and for soliciting the hit. moments later, keith was standing in a paducah courtroom speaking the words his family and friends never in a million years thought they would hear him say, yes, he murdered julie. >> there's no excuse for what i did. and i can't take it back. and she was my best friend and i don't know what happened to me. but i did it. there's nothing i can do about it. >> temple bradley who works near the courthouse was there.

>> my heart was breaking that the person that i have whole-heartedly put my trust in for two years has lied to my face. >> i just can't believe we've been deceived in that way. because we were there for him the whole time. >> for keith's family and friends, there are so many questions. but one seems to tower above all the others. >> i want to know why, and i want to know how you go from a loving husband and father and grandfather to driving all that way, killing your wife and then covering it up and then lying to your family for so long. knowing that we had everybody doubting us. that we still defended him. disgusting. he's a monster. >> all i can tell you is that i had a lot of bad thoughts, wrong thoughts, mistakes. >> we sat down with keith hoping

for answers but as many times as we asked him why this all happened -- >> why did you do it? >> i -- i really can't tell you. i mean i don't know. i mean, just a bad decision. >> -- we never did get a satisfying response. so this isn't some kind of delayed mid lye crisis here? >> no. >> were you trying to be with deand fla or someone like her to have a final happy chapter in your life. >> >> no. >> new house. >> julie and i were happy. >> do you see how perplexing it is to hear this? >> i know. >> it's absolutely confounding. > that's what i've told everybody. when they hear the story, they're not going to believe it. i have a hard time believing i did what i did. >> one thing he didn't do -- how about a divorce? >> never crossed my mind. >> keith now says the remorse began the moment he pulled out of his driveway. >> trying to get out of the subdivision, crying before i ever get out. regretting what i done. i probably drove 100 miles an hour all the way back hoping to get caught.

>> as for the future, keith says he is prepared to die in prison. >> i don't have anything to live for. except maybe forgiveness. >> from whom? >> from my boys. >> that's why you're talking today? >> exactly. yes. >> well, it's between you and them, but i'll tell you my take on it is you've got some distance to make up. >> i know i do. i've got a lot to make up. >> of the countless things keith stole from his family, resilience was not among them. aaron and zack are closer than they've been in years. and now that they know what happened to their mother, they say they can finally mourn her passing and focus on keeping her spirit alive for those two little granddaughters who were the center of her universe. >> my oldest daughter will remember like i said she talks about her almost every day. we have pictures of her up in her room. as my youngest gets older, we'll tell her the nascar nana story

about when she was born and just never let her memory die. >> that's all for this edition of "dateline extra" ". i'm tamron hall. thanks for watching. ". i'm tamron hall. thanks for watching. ". i'm tamron hall. thanks for watching. . i'm tamron hall. thanks for watching. " i'm tamron hall. thanks for watching. when i saw concept of time. i reached in, pulled her out, i started screaming help. >> please! amy, wake up! wake up! >> it was the worst seconds of my life. >> how was it possible? >> i would give anything if she were alive today.