d the clock partnership from comcast business. see why comcast business powers more small businesses than anyone else. get started for $49.99 a month plus ask how to get up to an $800 prepaid card. don't wait- call today. thank you for joining us for "the sunday show". i will be back saturday and sunday at 6:00 eastern . follow us on all platforms, using the handle, at @weekendcapehart. catches on youtube and listen to every episode as a podcast, for free. scan the qr code on your screen to follow and listen anytime, on the go. hello. this is "dateline".

if you admit that she is never coming home, it's like you admit defeat or that she is dead. a hard-working wife, a loving mother, a woman with a complicated love life. >> she was having affairs. >> they worked in the same office. >> now, the secret was out. replaced by a mystery. >> she never returned from lunch. >> we considered that they knew his wife was having an affair. >> nearly 30 years, 60 investigators, and it kept coming back to one elusive suspect. >> we calmly said, i know how to get rid of the body. >> i think it's something that can be done over a lunch hour. >> it was basically now or never.

when kathy heckel disappeared, police >> hello "dateline". when kathy disappeared, police did not know if they were dealing with a missing person case or cold-blooded murder. with little evidence to go on, the investigation grew cold. decades later, a young detective who was just a kid when kathy vanished dusted off the old files. investigators could not solve her case then. could he help solve it now? time can be like a river, a long stream of events, rushing by. most barely make a ripple, but few, like the sudden loss of a close friend, a child, or apparent, have a way of circling back upon us in a ceaseless wave of memory and regret. that's the way it's been for

john and his sister, alicia talbot, since the completely normal morning in 1991 when their mom, kathy, kissed them goodbye, left for work, and never returned. >> you remember her leaving that morning? >> yes. like any other day. same routine, all the time, every time she left us, she kisses goodbye. >> it was a july morning. alicia was 13 and john was nine , home for summer vacation. after 9:00, alicia says her mom called from her job. >> we discussed having dinner. pork chops. >> that was one of my favorite things she made. >> they tried to contact their mom at work. >> we called her around lunchtime, and she left for

lunch, and then we waited and called after lunch and she still wasn't back to work yet. >> at 40, kathy had spent half her life working at the local paper plant in lock haven, pennsylvania. >> i don't remember who i spoke to but you could hear in their voice some concern that she had not come back yet. >> you picked that up. >> it was not typical for her to not come back and not tell anybody. >> with their dad out of town, they kept trying to reach their mom. nothing. at 6:30, alicia called her grandparents, clarence and margaret. >> i answered the phone and alicia said, can you get us some milk? i said, what do you mean, can i get you some milk? she says, mom didn't come home

and we don't have milk. i said, i will be right there. >> what did you think? >> i didn't know what to think but as a mother you know that this was something bad, something very bad. >> that night, kathy's mother and father contacted everyone they could inc. of. >> no one had heard from her and that was, i remember picking up on that, that they seemed worried. >> you could tell. >> your grandparents are acting differently. >> their dad, john, was in upstate new york, training with his national guard unit. he didn't hear his wife was missing until the next day. >> when you get that phone call, what did you say? >> the conversation was that kathy didn't come home from work monday night and they didn't know where she was. >> now it's tuesday. >> you think, what?

>> i said call the police. >> with the permission of his commanding officer, john immediately left. he had plenty of time to think on that 5.5 hour wide -- ride. he taught -- thought about the time kathy donated a kitty -- a kidney to save her brother's life and the day, when he first saw her. >> she had the biggest brown eyes you could look into. >> six months later, they were married. >> we had our ups and downs but overall, i was happy about the fact that i did not have to worry about my family with kathy. >> you thought you would stay married forever? >> yes. >> the problem was that john was already married to the military. his career frequently took him away from home, sometimes for weeks at a time. kathy did not like that and john says his wife of 18 years

seemed to have that on her mind when she dropped him off for his latest assignment. >> she asked me why i had to be there so early which didn't make sense because i was always the first one. i said, it's my job. >> she didn't want you to go. >> but she didn't say that. >> but you could feel it. >> i could feel that something was wrong. the look on her face when she said it didn't sit right with me. >> now, kathy was missing and her disappearance would eventually drag into the open secrets that some in and around lock haven would have rather kept hidden. >> there was no doubt kathy could -- took good care of her family but as investigators learned, this wife and mother was a woman who sometimes was lonely. coming up. >> i asked her mom if she was seeing anyone and she said she established contact with an old friend from school.

>> that friend had a confession to make. >> he admit that they had had a physical relationship and a few days before she disappeared. >> when "dateline" continues. oooh! i can't wait for this family getaway! shingles doesn't care. shingles is a painful, blistering rash that can last for weeks. ahhh, there's nothing like a day out with friends. that's nice, but shingles doesn't care! 99% of adults 50 years or older already have the virus that causes shingles inside them, and it can reactivate at any time. a perfect day for a family outing! guess what? shingles doesn't care. but shingrix protects. only shingrix is proven over 90% effective. shingrix is a vaccine used to prevent shingles in adults 50 years and older. shingrix does not protect everyone

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put uc and crohn's in check... and keep them there with rinvoq. ask your gastroenterologist about rinvoq and learn how abbvie can help you save. so this is pickleball? it's basically tennis for babies, but for adults. it should be called wiffle tennis. pickle! yeah, aw! whoo! ♪♪ these guys are intense. we got nothing to worry about. with e*trade from morgan stanley, we're ready for whatever gets served up. dude, you gotta work on your trash talk. i'd rather work on saving for retirement. or college, since you like to get schooled. that's a pretty good burn, right? got him. good game. thanks for coming to our clinic, first one's free. thanks for coming josh mankiewicz: by the time john heckel returned home from national guard trainiyork state, by the time john returned home from national guard training in new york state, his wife, kathy, had been missing for about 36 hours.

>> my dad came back and he was the one who told us, we can't find your mom, we don't know where your mom is. that was the first time i've ever seen my dad cry. i knew the worst had definitely happened. >> that was the first time i saw my dad cry, too. you know, he was always this big strong man, and when you see that, it's like, okay. this is not good. >> it's a terrible thing to tell your kids because they want you to tell them this is going to be okay. >> dad always had the answers. >> you can't tell them this is going to be okay. >> you don't want fabrication. >> across town, a pennsylvania state trooper was on the case. this first call had been to

margaret, kathy's mom. >> i asked her if she noticed changes recently or anything in her demeanor that was weird and she said in the last few weeks, she was not herself. >> the trooper asked one of those probing and in delicate questions that cops have to ask. >> i asked if she had any indication that she was seeing anyone and she said she really is published contact with an old acquaintance from school. >> that was dennis taylor, he and kathy had recently reconnected at a wedding. taylor had been singing and playing guitar and the trooper named dennis taylor with the idea of calling him later and he die -- dialed the paper plant were kathy was last seen. a coworker picked up the phone. >> she corroborated what the mom had said, that she had been different, her personality seemed quieter. >> he asked another question.

>> i asked if she felt there was a possibility she might have been seeing anyone and she said she had no evidence but suspected. >> the coworker was not talking about kathy's friend, dennis taylor. she was talking about a man at the plant named lloyd groves. >> they played on the same volleyball team and i think the closeness of the two, she suspected that. >> groves was the quiet type, married with children. sometimes, he led plant tours and gave presentations at local schools. a call to the office revealed he was not in yet, so the trooper left a callback message and not long after, the trooper says mr. groves showed up in person at the state police barracks. >> he was calm, he said he knew her, that they worked in the same office areas, that they were friends.

i asked if he had a physical relationship with her and he said no. >> shortly after leaving the barracks, they walked in. dennis taylor, the guitar man. he was a married man with children and off the bat he told the trooper that he had a confession to make. >> he admitted they had a physical relationship, briefly, and it was only a few days before she disappeared. >> he knows his audience is hanging on every lyric. the guitar man kept singing to the cops. taylor told the trooper that kathy called him at work the day she disappeared. her voice, he said, had a strange town. >> she called him before lunch and was upset or anxious and said that she had something she wanted to talk about and he was busy and said he could not talk

and hung up. he tried to call back sometime later. >> taylor said he played golf with friends that afternoon and plans to meet up with kathy later that night. >> he goes there, the location they are going to meet and kathy does not show up and he was concerned something may have happened. >> then, the guitar man struck a familiar chord. kathy had also been seeing another man, lloyd groves. according to taylor, groves was a stocker. >> he met kathy at a park, nearby. he said there was a park and he remembered seeing a gray van and then the next time he talked to kathy, he said, did you see that van? it was following her. >> was he trying to implicate arrival to save himself? the trooper new this much. if kathy had been juggling simultaneous affairs with married men, there could be a

lot of people who might have wanted her to disappear, including her husband. >> he was a person of interest. >> how much did john know about what was going on in his wife's life? coming up. were police looking for a runaway wife or her killer? >> there are no answers and that was the worst part. >> did you feel like you were a suspect? >> i knew they were trying to find where kathy was and what happened and if that included questioning me, i had no problem with that. when "dateline" continues. . (jen) so we partner with verizon. their solution for us? a private 5g network. (ella) we now get more control of production, efficiencies, and greater agility. (marquis) with a custom private 5g network. our customers get what they want,

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wooooo! josh mankiewicz: any investigation in which someone goes missing or turns up dead j any investigation in which someone goes missing or turns of dead, just about guarantees family members will be considered suspects. kathy's husband, john, was no exception. >> we consider the john might have known his wife was having an affair and they have taken action on his own. >> did you feel like you were a suspect? >> i never worried about it. i knew they were trying to find where kathy was and what had happened and if that included questioning me, i had no problem with that. >> at some point someone said, we believe she was having a relationship with someone.

was it shocking? >> it was surprising because that was not the way kathy was. >> in his interview, john said he had noticed a change in his wife's demeanor recently. he wondered if she might be having an affair. >> he was emotional. there were times where we sat together and he would cry, he was concerned about his wife's -- his wife and i felt bad for him. >> the alibi checked out and police found no evidence that he had paid anyone to hurt his wife. by now, kathy had been missing for two full days and john feared the worst. >> kathy would never abandon those children. >> the trooper still did not know if he was working a missing person's case, abduction, or homicide. on the evening of the third day, investigators got a break.

they found kathy's car. the keys were missing. >> i think they recovered a print but i don't know if it was identified. >> investigators were now pretty sure that someone, possibly her killer, had moved kathy's car to the house the parking lot and then, the case hit a dead end. days turned to weeks and weeks stretched into months. kathy was somewhere in the wind. >> our dogs come down often and we would search for remains or whatever. maxim investigators focused on finding kathy and others concentrated on finding evidence of a crime. as far as investigators could tell, the guitar man had been honest, confessing his affair with kathy . lloyd groves had seen --

seemed dodgy. while some items of interest were found, the prosecutor did not think police had enough to make an arrest. >> there is a big hole, from an investigative standpoint. >> if you can imagine probable cause, beyond reasonable doubt, and everything else in between is the difference between conviction, or are you. >> you don't go forward unless you are reasonably sure. >> uses the fact that kathy had not been found was a problem. >> how do you prove a beyond reasonable doubt that she's dead ? if she was killed, where? >> maybe it's not in your jurisdiction. >> correct. >> kathy's disappearance was a defining event.

>> i didn't know what that meant , but just thinking about how low and sad i felt all the time ? >> people deal with things differently and i certainly chose the avoidant method, to not think about it. >> there were no answers and that was the worst part. >> 1998, seven years after kathy disappeared, john had his wife declared legally dead. that did not make the mystery any easier for him to understand . >> can you accept the idea, that she had to meet with men who are not you, but love to you? >> i believe she did love me. >> but you don't know how long that life was. it could have been her plan

when she asked me why i had to leave so early. i'm not going to hate her for being human. >> 22 summers came and went. the kids grew up and started new lives out west and alicia became a ski pro, john, a fishing guide but through it all, their mother was never far from their thoughts. >> she missed those childhood memories, going to prom, boyfriends, kisses, and just everything. >> she missed our weddings, she missed her graduations, she doesn't know her only grandchild. >> you probably thought about her through it all.

>> clinton county never forgot kathy, either. she had become part of history that would not go away. as one generation of lawmen retired, another rose to take up the unfinished business and discover enticing details buried in a very old file. coming up -- >> when i took this case it was 22 years old. >> 60 other investigators. >> he was eight years old when kathy disappeared and was now in charge of her case. >> what i remember, growing up, where was kathy all this time? >> and, a leading suspect suddenly leaves town. >> three weeks after, he moved his family back. when "dateline" continues. .

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we have top stories. ca director bill burns may travel to israel for continued cease-fire negotiations according to a source with knowledge of the matter. he had been in qatar for most of the round of recent talks were hamas and israel remain at impasse. severe storms moved out of texas following a deluge of rain. a five-year-old boy died sunday in the fort worth area after being swept away by russian floodwater. for now, back to "dateline". investigators suspected kathy heckel may have been welcome back to "dateline". investigators suspected that kathy may have been murdered, but with no body and little evidence, the case went into a deep freeze for decades. her family had never been able to shake the chill of their inconceivable loss, but now, a new detective was about to turn

up the heat. for more than 20 years, kathy's children lived with a feeling of unfocused fear. >> it's an unsettling feeling of fear that essentially, something great in my life can be taken away at any moment. >> and you think that can be traced back to your mom? >> absolutely. >> for their father, john, those were years spent struggling to let go and move on . >> i talked to kathy. >> what did you say? >> just talk. >> i would ramble on. >> and you would talk to her out loud. >> something will come up to remind me of something we did. >> law enforcement had not forgotten kathy.

in the summer of 2013, a native son inherited the case. state police investigator, curtis coffer. >> it was 22 years old when i took it. >> it passed through a lot of other hands. >> 60 other investigators. >> and you thought you would be 61 and then there would be a 62nd period >> there were 400 pages of reports and i just read it. >> to the 61st investigator, the reports were riveting. he heard the story as a child and even had a connection to lloyd groves, whose name was all over the file. >> he came to my elementary school and did a presentation. >> you saw a photo of him. he >> and i go i remember him coming to our school. >> he was convinced that at the time this picture was taken, lloyd groves was having an affair with kathy. only two months later,

investigators considered groves a suspect in her disappearance. >> what i remember growing up is, where was she, where was kathy all this time? john was my brothers soccer coach. >> the case files were full of details. a gun found in lloyd groves desk door, ammunition in his van , a curious chunk of carbon missing from the back of the van. >> what was the explanation? >> he said that kids were playing with tar and oil and got tar and oil in that section. >> with that confirmed by anyone ? >> no. a witness reported seeing them together in this part man. there is evidence that on the

day that kathy never returned from lunch, lloyd came back so late that he missed a 2:00 meeting. >> it's something the original investigators found was that lloyd wrote a letter to his wife announcing to the family that he would be arrested for the murder of kathy. >> right after the disappearance. >> he wrote detailed notes to his wife about how to take care of the tractor, the car. >> this is a guy who likes to plan. >> use a planner. >> but he was wrong. >> he was not arrested. three weeks after the disappearance of kathy, he moved back to beaver, pennsylvania and left a lot of his personal items behind. >> when he finished reading the case file, he called the local fbi office looking for items connected to the case. it was then that he connected with a veterans day trooper assigned to a joint task force

after explaining what he was after, hudson asked to see the file. >> i thought it was a good case. i felt that there was a real suspect. >> when his partner, fbi agent, and former prosecutor read the file, he was also hooked. >> this is something we wanted to do, we wanted to see if there was any way we could actually bring it forward. >> investigator 61 had a team to help him. >> they had so much knowledge that i didn't have and by the grace of god, they helped me. >> time, it became clear, was not on their side. >> i always felt we were a heartbeat away from losing a witness. >> as they work to the case, the investigators knew they had one ace in the hole. in 1991, specks of blood were found in lloyd groves van and

dna test were done in 2004. >> based on the fact that there was not a dna sample, they had to construct one from the victim's mother and father, essentially building the victim's dna profile. >> that proved the blood was kathy's. the trooper says that bit of evidence fell through the cracks because the lead investigator and primary prosecutor at the time took medical leave. one thing was clear to all three of the new investigators. this case needed more resources and more prosecutorial muscle than the county possessed. >> we requested the district attorney relinquished the case to the attorney general's office and the daf time agreed. >> in early 2014, a grand jury reviewed the evidence.

they hit the road. >> we did interviews in different states and traveled the country. >> the new investigators tracked down old witnesses and even found a new one. the man who remembered an argument between kathy and lloyd on the day she went missing. the question was, did police have enough to make an arrest? coming up. >> i got to know this family because i knew that this would be at trial. >> is it kathy who ends up on trial? >> every indiscretion of her would be announced. >> she was going to be punished. when "dateline" continues. target the source of pain with nonsteroidal anti-inflammatory medicine directly at the source. voltaren, the joy of movement.

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it's a big deal. josh mankiewicz: as a military man, john heckel finds solace on old battlefields. the past is always present there, as a military ouman, john finds solace on old battlefields where the past is always present but for john, no peace could be found as long as his wife's killer walked free. >> i would always say, where are we, how close are we to getting him arrested? >> and the police would say? >> the dna won't go forward. >> it's more like, we need more. >> investigators went looking for more, and dug deep looking for kathy. even so, january 28th, 2015, a

grand jury indicted lloyd groves for murder, largely on the strength of the same evidence that had been in the files all along. >> it was literally like television. we got there early, 5:00 and sat up. we jumped out and put the handcuffs on him and said, you are under arrest. >> did he say anything? >> he told his son he needed to get a ride to work. it didn't faze him. >> the lloyd is arrested. >> in her thankfulness that we were getting somewhere, we still have a long way to go. >> in many ways, the arrest of lloyd groves was the easy part. legal maneuvering delayed his trial another 3.5 years. for the defense, that delay

gave their investigators time to poke holes in the prosecutions case. >> there were holes in this case that you could drive trucks there. >> these were the defense team investigators. >> we were in the case for nearly four years and talked about him. i would guarantee it was every day. >> he knew how to look for flaws in the police work. amy, lock haven native, grew up with kathy's story. >> you talk to anyone and they would say that lloyd killed her and put her in a vat of acid and that was the working theory for years. >> tom says the files he read did not prove that. he says he found a silver bullet in the piles of documents. >> we discovered that in reports, in medical records, she had cut her finger at work and it was bleeding so badly she had to get treated three times and this was at the time she was allegedly in lloyd's

van, every day. >> if the prosecution planned to make a big deal out of the dna test showing kathy's blood, the response would be, so what? >> they think it came from kathy because lloyd killed her but here is kathy's blood because she cut herself at work. >> pennsylvania senior deputy attorney general knew that the defense would do more than just attack the evidence. he fear that they would attack kathy, too. >> i got to know this family. i knew this would be an ugly trial. she was going to be punished for being murdered. >> the case is almost entirely circumstantial and began the testimony from kathy's children.

>> it was difficult but it felt good to be in front of lloyd groves and have him look at me and listen to my story. >> and how scary it was. >> according to friends and family, kathy was a devoted daughter, a loving mom and at the same time, restless. >> tell me what was going on in her life at that time. >> her life at that time was lonely. john was a good guy, but his first love was the military and kathy was having affairs and one was with lloyd groves. >> another lover, the guitar man, said kathy had told him all about the unraveling affair. >> kathy was trying to break off the relationship, we knew that. lloyd did not wanted to end and wanted to meet for lunch that day. >> did lloyd know about anything?

>> we had evidence that groves was following kathy. >> she expressed some fear about lloyd. >> in a special hearing, two former paper plant employees who had been in poor health had their testimony prerecorded. one said he overheard kathy and lloyd arguing the day that kathy went missing. >> it was loud. >> the other said she saw lloyd groves staring daggers at kathy when she left for lunch that day. >> his face was so red, like he was terribly angry and he was looking at kathy. >> kathy pulls out, lloyd pulls out after. we believe that the did meet, somehow, someway, kathy was cajoled into one last meeting to hear lloyd out and at that point in time, lloyd shot her, shoved her into the van with a head wound. >> he was back at the plant

between 2:00 and 3:00. >> and they get away with it? >> he's smart and a good planner. i think that to him, lunch can be done over a lunch hour. >> the prosecution wrapped up with two witnesses. the first was lloyd groves ex-wife. >> lloyd groves did come home, july 15th. >> something he never did. she never saw the conditions. >> the next person to testify was this woman, gail taylor. she had a story to tell that she had kept to herself for decades. it was the mid-'90s and taylor said she and groves worked

together. according to taylor, she went to groves one day to vent after discovering drugs in her son's room. >> i would like, i don't know what i'm going to do, he's going to get in trouble and he will end up dying if the drugs don't kill him, his mother will. lloyd was at his desk and very calmly said, well, i know how to get rid of a body so it would never be found. >> the defense argue that he was joking. >> i wouldn't joke about being able to dispose of the body where no one can find it if i had been investigated for killing someone and they never found the body. >> prosecution close by asking who lloyd -- who but lloyd groves could've killed kathy and in return, the defense stood ready to ask a provocative question of their own. could kathy have simply run away? coming up. >> do you really think she lived past that day? >> i have reasonable doubt.

>> the jury had the same doubt. >> it was a nervous moment, absolutely. when "dateline" continues. with the freestyle libre 3 system know your glucose levels. no fingersticks needed. all with the world's smallest and thinnest sensor. manage your diabetes with more confidence and lower your a1c. try it for free at freestylelibre.us

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lighting every soccer match at shell energy stadium. we're moving forward with the houston dash. because we're moving forward with everybody. shell. powering progress. lighting every soccer match at shell energy stadium. we're moving forward with the houston dash. because we're moving forward with everybody. shell. powering progress. welcome back. decades after kathy heckel disappeared, loyd groves welcome back. decades after kathy disappeared, lloyd was on trial for murder. prosecutors relied largely on circumstantial evidence to make

their case, including testimony from a woman who said lloyd said he could get rid of the body, permanent but lloyd's attorneys insisted he was innocent and were ready to put kathy's love-life in the spotlight to prove it. here's the conclusion. >> your four aces, and you are waiting. that's what it felt like. >> he was one of two lawyers defending lloyd groves. >> what evidence they presented had issues, questioning if it was reliable enough to justify taking a man's life away. >> for defense team that spent years reviewing these reports, one thing seemed obvious. >> when they learned of something that implicated lloyd, they were on top of it. when there was another avenue to pursue, it falls by the

wayside. >> this was more about the police trying to prove that it was lloyd groves that did this then it was trying to find out who killed kathy if she was killed. >> the defense argued the guitar man should have gotten a closer look. >> yes, she had an affair with lloyd but she did with dennis taylor. >> he told police he played golf the afternoon kathy went miss them. >> they went to check out his alibi, 13 months later, not right away, and when they go there, the log he has to write in showed he was golfing, but pages are missing. >> of course, the defense argued that kathy's affairs could have provided her husband with a motive for murder. weeks after kathy disappeared, the defense noted that john discarded some of her personal items. >> her husband throws way her purse, her wallet, her photo i.d.

he doesn't do in a garbage can in front of his house, it's a dumpster in the back of the reserve. >> you're saying he wanted to conceal that. >> to john have something to hide? the defense did and offer an answer, but john says he does not remember much about those days. the defense suggested that kathy may not have died on july 15th, 1991. >> do you think she lived past that day? >> i reasonable doubt to whether or not she died that day. >> the defense introduced statements john made more than 20 years ago. in one, he said he thought his wife may have siphoned thousands of dollars from a joint bank account. in another, he asked investigators if a woman pictured in a swingers magazine might be his wife. >> is there any credible argument that kathy squirreled away money, vanished, ran out

on her husband and her family, and pose for pictures in a swingers magazine? >> i don't think it has been disproven beyond a reasonable doubt. >> on the stand, those statements had been the frantic musings of a desperate man. >> i was grasping at anything i could think of to try to find out what happened to my wife. >> the defense conceded. groves went home to change his shirt, but said that was because he had gotten dirty at the plant where he had to lead a tour for a group of children at 3:00 that afternoon. that lunch hour trip home, they argued, simply made the prosecution's version of events more unlikely. >> if you factored in all the witnesses, how does he have enough time to have done what they claim he did?

>> for 27 years, the question of what had happened to kathy had hung over lock haven and it was now up to a clinton county jury to finally provide an answer. >> it was contentious. >> sean sanford, a toddler at the time kathy disappeared, was the foreman. >> the first boat we took was 7- 5, a- four, for guilty. i thought it would be the other way. >> why did you go for acquittal? >> if you look at all the evidence individually, you can poke holes in all of it, piece by piece. >> the jury returned monday morning, rested the deadlocked. >> there was one juror in particular who was voting for acquittal could not get over the fact he thought the prime suspect should be john. >> over and over, jurors refuted and discussed to the evidence and just before 3:00 the afternoon -- that afternoon,

they reached a verdict. >> it was a nervous moment, absolutely. i was nervous and we were all holding hands. >> for the charge of first- degree or premeditated murder, the verdict was not guilty. in what seemed to be a decision, groves was found guilty of third-degree murder, legally considered a spontaneous act in the heat of the moment. >> did you know lloyd groves? >> i spent more time looking at kathy's picture. >> in a letter to "dateline", lloyd groves denied ever having had an affair with kathy and said that he had been wrongly convicted. at the age of 69, groves was formally sentenced to serve 10 to 20 years in prison. >> even with the sentencing, he will spend his life in prison. >> is that enough for you? >> no.

>> it's been more than a quarter century since the summer morning when kathy kissed her children goodbye and though there wait for justice is finally over, they are no closer to knowing where their mother is them they were on that summer night in 1991 when she did not come home. >> so, unless she was found accidentally, we might not ever know. are you okay with that? >> if we have to live with it. it is sad and disappointing that we will never know, or that we may never know, but we have to be okay with it. it. stomach that's all for this edition of "dateline". thank you for watching. ng. [music playing] hello, i'm andrea canning, and been murdered."ne." ms hello, i am andrea canning and this is dateline.