hello i'm craig melvin and this hello, i'm craig melvin, and this is "dateline." is dateline >> he goes to him, and he says, there are these little falcons. and he says they watch over the dead.

and he goes, they do. >> what if someone asked you to risk your life? >> what if i shape get changed? what if i get killed? >> to go undercover. and one of the country's most dangerous presents. >> once they stepped out the door, i was on my own. >> they helped him catch a killer. >> she had such a zest for life. >> young girls were being murdered. >> i can't imagine sending my daughter off to school, and never seeing her again. >> and investigators needed health to get a confession. >> if anyone could pull it off, he would be the problem to pull it off. >> but this was different, he was always be a convicted felon. if it worked, he could win his freedom, if it did, it he could lose his life. >> they had your back? >> they had my back. >> that's what you thought? >> that's what i thought. ♪ ♪ ♪ >> hello. and welcome to dateline. jimmy kaine was a smooth

talking convict serving a ten year sentence. when he was offered a deal. if he helped prosecutors pry a confession from a suspected serial killer, including a location of the victims body. he could walk away a free man. and it was dangerous undercover work requiring him to spend life behind bars of a federal fifth is present of the criminally insane. getting and was easy, getting out alive would be much harder. here is lester holt with the inside man! >> two enemies, who did not trust each other faced off across the table. one of them in handcuffs was a clever con named jimmy keen. the other? a hard charging prosecutor. >> -- >> the prisoner was worried sick. larry beaumont's, the prosecutor who had just convicted keen and put him behind bars.

suddenly wanted to talk. a top secret meeting, no less. what more could he do to jimmy? >> it was the last person i expected to hear from. it was my biggest fear. >> but keith fears went off the chart, when the prosecutor slip an accordion file in his direction. on top was a grisly photo of a dead girl. >> i flip to the next page, and here is another dead girl. i'm thinking, whoa, wait a second. >> he's thinking at this point you're about to charge him with something else? >> yes. because i had been pretty rough on him in the initial prosecution. >> jimmy was in the dark. he had no idea of the crazy scheme that beaumont had in mind. >> he says jimmy, he says listen. this is something that we had another person on. he has killed many, many young women. and i personally think that you are the one that can help us with this.

>> this, turned out to be an investigation into trying to catch a suspected serial killer. beaumont, an outside the box thinker, believe that this conflict, jimmy key, was the one who could somehow crack the case. taking on a unique, and deadly mission. >> i realized how serious it was, and i also realize the danger of it. >> but what he could not know was how such a daring mission would change his world. and the person that he was forever. if this all seems fodder for a hollywood movie, brad pitt would agree. the megastar who was benjamin button, and money balls big d b, considered playing none other than jimmy kaine. >> brad pitt likes the fact that this guy, jimmy keen, risked his life to try to find what he could find. >> clearly, this guy is one of a kind. charismatic, conceded, courageous, and complicated.

from an early age, he had the personality, charm, and cockiness that made a dream that are hollywood star would one day one to play him in the movies. his first big brush with fame came on the football field. >> i heard that they called you the assassin in football? that was a good thing i take it. >> yes, i was taught by my dad at a young age. he says son, he goes, if you don't hit that guy first, he's gonna hit you and hurt you first. >> a superstar athlete, and mr. popularity in high school. he seemed to have it all as a big fish in the river city in illinois. a blue collar town south of chicago. >> i had was the most valuable player, i was the captain every year that i played. >> he grew up in the shadow of his father, big jim, a giant of a man who was a cop, firefighter, and hero to his son. >> he was my best friend. he was on my back on everything i did. >> but all this potential would be put into peril by a terrible choice that he made. as a teenager, he began to sell drugs. he started small. peddling bags of marijuana, here in this park.

then he expanded to cocaine, and at the tender age of 17, he moved to chicago where the business, and profits exploded. he was now a big fish in a bigger pond. lake michigan, to be exact. he was his own in crowd. fast cars, and souped up living. >> all the hotspots, all the big nightclubs. all the owners i was tight with. i would have lunch at every place i went to. >> where you -- >> yes there was a certain point where it wasn't invincible feeling. >> did your father? now he's suspect? >> he didn't suspect until much, much later. >> it would be a rude awakening for both his dad, and jimmy that day in 1996 when jimmy was just relaxing and one of his chicago homes. >> and all of a sudden, come boom, the whole door is blew off. the hinges come flying into the house. and all this da, fbi, and locals came in in fine gold

line and weapons pointed. telling me to get on the ground. >> he -- spearheaded by the hard-nosed federal prosecutor, larry beaumont. >> we scooped him up in an operation that iran. we called it operation snowplow. >> and in court, beaumont showed keen no mercy. >> he was coming at you on all fours? >> oh yeah. he's a bulldog. >> jimmy was convicted, and slapped with a ten year sentence. >> it was a ten year sentence, and i knew he did not expect to get ten years in that case. >> your farther was in the courtroom? >> i knew i let him down in probably one of the biggest ways you can let someone down. >> his future was bleak, he faced ten years away from his glamorous life. the fancy cars, the big bucks. but in 1998, just when all hope seemed loss. his old nemesis, beaumont, came

to him with an offer of freedom. attached to that accordion file that he slip across the table. in return, cain would have to agree to risk everything. and become an undercover informant in one of the roughest provisions in the country. the maximum security lockup in springfield, missouri. it was a psychiatric pridgen with both hard-core killers, and the criminally insane. >> these people all have life sentences. they're all in their, and their crazy. and they have nothing better to do than trying to hurt you, and kill, you for some fun. >> if he accepted bull montes offered, his target would be the suspected serial killer. a mysterious man in a van. >> coming up! every picture tells a story. >> when i put the picture down, he flinched. raised his arm up, and refused to look at the picture. >> when dateline continues!

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several years before jimmy keene's arrest and conviction, his drug business was booming. came to arrest and conviction, the drug business was booming. and the personal life, as he tells, it was nonstop fun and games. a lot of hot clubs here in the 90s. >> this was the place that you are doing business as well? >> we want to play right here yes. it was a good time. >> back then, he had no idea

about the danger lurking 150 miles south and a lifestyle away that will change his life forever. rural, tranquil georgetown illinois is where carrie roach and her husband were raising their 15 year old daughter jesse and two other children, fire removed from the big city crime. >> everybody knew everybody was, so they were conscious of what was going on usually. you can count on somebody to go after your kids if they need it. >> in 1993, jessie was a high school sophomore devoted son home and family. >> jesse was really very much of a home body, so one of the road and back, she was done, and then she would be watching gone with the wind. >> one money in september, jessie went out for a bike ride but just minutes later, her sister noticed jesse's beloved

bike down on its side. in the middle of the road. >> not on the side of the road, in the middle of the road? >> yeah. she would put the kick stand down instead of the bicycle, she would never lay the bicycle down, and immediately went down there and there was a bicycle. and we knew something was wrong. >> gary miller was the deputy sheriff of dispatched to the scene. >> the more that we learned about the family and the girl's background, we just did not feel that she was staying away by choice. >> a hunting image of a bike tripped over and abandon, terrified all the investigators and of course jesse's family. >> you never lose the hope for them not wanting to come and

walk, in we knew that she was not just gonna walk away. >> after six weeks, jessie's parents worst fears were realized, her body, beaten and sexually violated was discovered in a cornfield. >> it can never be easy telling apparent that their child is dead? >> no. it was not. but at least we were able to tell them that this is her and she is gone. we were able to erase all doubts. >> gary murder had a murder case dissolve and it was now a federal case involving prosecutor larry beaumont as well since jessie's body had actually been followed across the illinois state line. for the next year, miller did lots of legwork but to no avail. >> every day you get up in your thinking about this case? >> oh yeah. >> what if i? missed >> exactly. >> i know this case really shook him from the beginning and he would check any and all leads with that would involve girls, and run them down. >> then, in late 1994, his persistence paid off. a man in a van had been reported chasing two teenage girls in jessie's hometown of georgetown. miller trace the van to a man named larry hall, from indiana. a three hour drive from georgetown. >> is the heartbeat starting to

pick up a little bit? >> yeah. i think this has to be checked out. >> miller learned that hall was a gun war civil war in reenactor. a soldier who traveled the midwest to fight fancy battles. he immediately drove their to interview hall who was not saying much, so miller showed him a photo of jesse roach. >> when i took the picture down, he flinched. raised his arm up and turned in his chair. and refused to look at the picture. >> convinced that larry hall was hiding something, miller became obsessed with making a case against him. days later, back in illinois miller turned up a huge lead. he found witnesses who vividly remember hall from a revolutionary war reenactment in the georgetown area, the very weekend before jessie was abducted. to them holstered out for his birdie she, mutton chop sideburns.

but also for playing a soldier who was fighting the wrong war. >> he was rearing a civil war uniform. and he had a civil war hat. >> and a revolutionary war? a reenactor? >> exactly. >> armed with this new information, the deputy sheriff returns to wabash for a second crack at hall. this time, he pressed his suspects far. they're saying that the reenactor's had seen him there georgetown. >> he came along to the point where he said, you know, i do so many reenactments i could've been there. i don't remember. because i go to a lot of them. >> he's giving a lot more ground? >> right. >> so miller see the opening and kept at it. finally, he said, hall came clean and confessed. and he abducted, sexually violated, and strangled jesse rose to death. >> how much did he give you about the killing of jesse roach? >> good detail. what he actually dead. and what took place. >> not only that, he says that larry hall confessed to other killings. including a coed from indiana university and nearby mary and indiana, name trisha wrangler.

>> he did say that he was involved. >> deputy shareeduh did not know, much, so he called the indiana police who have been handling the case. but when mary entered active and other indiana cops arrived, hall was suddenly telling a much different story. he denied confessing to any killing. including jesse's and trisha's. what is more, he claimed that it was all a misunderstanding. and about disturbing dreams that he had. >> he takes us out to a location, i struggle here, we left her to lay here. we searched the woods, we searched the area, never found anything. >> the indiana cops familiar with paul were not at all surprised by his actions. some of them like j. k. thought hall might be a want to be. a pretender who gets his kicks by confessing to crimes that he did not commit. >> is it possible that he is

simply obsessed with these cases but not involved? >> there is no doubt in my mind, that he does follow these cases. that he does read, and is attracted to two cases. all over the country. so the question does come, is he a want to be? >> deputy sheriff miller, and prosecutor beaumont however, felt certain that they had a real killer on their hands. a serial killer, with a unique mo. he would drive cross country to reopen accidents and play fantasy soldier. then pray on young women, and kill for real. >> the fbi started discovering girls that were in fact missing various areas. at the time that larry hall would've been there. >> but the only case which prosecutors had significant evidence was jessie roach. larry hall was arrested in connection with her death, even though he denied that confession a miller. hall went on trial in 1995. >> as a prosecutor, what is the best card that you are holding? >> well, we had a statement, his confession, said he did it. >> valmont called deputy

sheriff miller to the stand. to testify that hall had admitted that he had abducted and killed jesse, when he's spotted her with her bicycle. >> he was walking the bike at the height. >> in the confession, paul gave him a detail that only the killer would know. that jesse was not riding her bike, but walking it. as safety precaution that the roaches insisted that they follow when on the narrow road. >> that was not in the press that she was walking the mic that day? >> yes. >> when you heard that, did he give more credit to the story? >> yes. it sealed it for me. i knew that he was the one. >> a jury, unanimously agreed. it took three hours to convict larry hall. but prosecutor beaumont believe that this was just the tip of the icicle. he felt certain that hall was a serial killer, and he had to find a wave of proof.

so he began investigating trisha's abduction. a case that was in his, for a family he did not know. >> i can't imagine sending my daughter to school, and never seeing her again. >> and he came up with an outside the box game to get all. which would risk the life of that charismatic convicts that he had just put away for dealing drugs. jimmy keen. >> what happens when i have to deal with all of these crazy colors and stuff? what if i get shanked? what if i get killed? am i gonna survive this? >> jim is get out of jail free card comes with a heavy price. >> coming up! >> they had your back. >> they had my back. >> that's what you thought? >> that's what i thought. >> when dateline continues! when it strikes and prevent migraine attacks, all in one. don't take if allergic to nurtec. allergic reactions can occur, even days after using. most common side effects were nausea, indigestion, and stomach pain.

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people typically don't admit murder-- admit murders, sexual salts and murders, to police officers unless in facts they have probably done it. but it's clear that they felt that he was responsible for the murder and disappearance. >> she had a zest for life, and she would walk in the room and everybody knew she was there. >> trisha, a 19 year old psych major at indiana university was on her way to becoming a family counselor. >> her goal was to be able to put families back together again. >> then, in march of 1993, donna and gary received the late nine phone call that every family dreads, a cop from indiana was on the line. >> he says that do you know

where trisha is? >> in my heart, i knew that something was drastically wrong. >> she had walked to an off campus supermarket and never returned to her dorm. more than 25 years later, her parents are still waiting. >> we have no answers. and somebody out there, that is where somebody is,. >> trisha wasn't the prosecutor of the beaumont case, but he was deeply moved by her parents. >> that's what got to, mate they knew about the facts of the case, and the family, and i had read it, and i read all the newspaper articles. and the accounts of them asking for help. >> beaumont fell certain that suspected serial killer, larry hall, was responsible. not only did hall live 25 minutes from indiana.

he had been identified chasing to coeds there just a week after tricia went missing. so in the summer of 1995, a month after convicting hall for jesse roach's murder. they had the search for trisha. it was in those same indiana backwoods where hall had told indiana authorities that he had killed and buried trisha. >> i wanted to feel like i did everything i could to see if we could find her body. >> but after two days, searching in sweltering heat and humidity, the body did not turn up. >> does it mean it wasn't there. >> then, beaumont decided to try something completely different. >> i came up with the idea of putting somebody in the prison cell to see if we could get him to tell us what happened to trisha. >> he thought you were crazy? >> yeah most people thought i

was crazy but i would able to convince them i was not. >> enter jimmy keene, the drug dealer beaumont had just convicted and sent to a low security prison. >> why did he stick out in your mind? >> because i knew he was a con man. he was smart. if anybody could pull it off, he would be the one to pull it off. >> he was trained and malls shots, he was like you can go into a dangerous advisor meant, and protect yourself there. >> in return, beaumont offered jimmy freedom. but first, he would have to exact more than a confession. >> i told him, unless he we found the body. no credit. nobody, you did nothing. >> jimmy was skeptical, he was a drug dealer, not a criminal profiler. and he knew that this was a mission impossible. he said no. but then, fate intervened. jimmy's dad suffered a stroke. weeks later, frail and sickly. he came to visit jimmy. >> my dad was in a wheelchair. this is big jim. the guy that had been super man to me my entire life. we cried to the window to each

other. and we talked, and he did not know about the offer. nobody knew about it. >> jimmy now realize that he had a onetime only opportunity to fix the mess that he had made for himself. and get out, while his dad was still alive. >> as soon as we were done with a visit, i called my lawyer and said tell beaumont i will take him up on his offer. >> the mission was on. so on august 3rd, 1998, federal marshals escorted jimmy into the psychiatric prison. >> once they stepped out the door, i was on my own. >> jimmy's cover story was that he was a convicted weapons runner. who's 40 years center, push him over the edge. and landed him in the same prison. a psych prison filled with killers. his one, inside contact. the chief psychiatry us, could not protect him. nor could his outside lifeline, female fbi agent who visited as his girlfriend. to monitor his progress. >> i did have a hotline to her too, so if i get caught in a difficult situation i could get a hold of her in the deal was

they had me in 24 hours. >> then i'd be back. >> that's what you thought? >> that's what i thought. >> when keene's mission began, it was all about him. his shot at freedom, he had a few feelings if any about tricia reitler for her family. all you want i was getting it out of tricia location in a soon as possible. they, one breakfast in the mess hall. jimmy zeroed in on larry hall. >> i was way with my tray, and i look, over and there he is, 20 to 25 feet away from me, setting all by himself. if i look a magnet was compelling him to come to me. finally i bumped holders with him on purpose. >> jim a swanky was a brand-new invite needing directions to the library, hall obliged. >> i kind of stopped on the shoulder. i, said thank a lot. i appreciate that from a cool guy like you. >> after, that the occasionally talked, but the next up came when jimmy was invited to join halls a breakfast club.

>> which in the prison system is a big thing of who you are invited to have your breakfast with. >> keane thought he was making progress but then present politics got in the way. >> i left out of the chow hall when warning and a few really big muscular guys come up to me. said, hey, the old mount talking right now. right now he want to talk to you! >> the old man was celebrity mafioso vincent louis gigante, also known as the odd father who used to wander around new york city with this bathrobe pretending to be nuts. >> he goes, hey boy, what's wrong with you? what's wrong with you? how you hang around all those baby killers there for? he says, you go and hang out around with us from now on. he says maybe someone comes up to and put a knife and you're back. [laughter] you know? he'd be at my cell in the morning. jimmy, get up, get up! we're gonna play some mask. >> what about breakfast? >> we're gonna go play back basketball first and then play breakfast.

you have >> it's all very nice but you find out a prison. >> exactly. >> taking up jimmy's valuable time making it harder to even talk to hall. but then, he learned hall's favorite show was america's most wanted. so it won saturday night in the tv room, jim it would make a daring move, putting his body on the line just again larry's trust. ♪ ♪ ♪ >> coming up! jimmy's new best friend shares a nightmare. >> it is probably the hardest thing i've ever done in my life to listen to this kind of stuff, and i'll just rip him apart. >> when dateline continues! ♪ ♪ ♪ [♪♪] did you know, sweat from stress is actually smellier than other kinds of sweat?

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what's happening. the united nations estimates at least 45% of the housing in gaza has been destroyed or damaged based on satellite imagery. palestinian officials say the

death toll has risen about 11,000. meanwhile, israeli officials have lowered death toll from the october 7th attack to 1200. and the fbi seizing cell phone, ipad from new york city mayor eric adams early this. week he says that he is cooperating with authorities as they investigate whether a foreign government funneled money into his 2021 campaign. now back to dateline. now back to dateline ♪ ♪ ♪ i'm craig melvin. convicted drug dealer jimmy keene was on a mission. >> welcome back to dateline. i'm craig melvin. convicted drug dealer jimmy king was on a mission after making a deal with a federal prosecutor, he didn't pull traded a psychiatric prison. his goal? to get suspected serial killer larry hall to admit to the killing of tricia reitler and reveal the location of her body. if successful, jimmy would be released from a ten-year prison sentence. but even a hardened inmate like jimmy would not be prepared for the horrific story hall was

about to share. here again is lester holt where the inside man. >> quite a fall of 1998, after several months in missouri's toughest federal prison, jimmy keene could have won a populated contest. he charmed everyone. just in beaumont knew he would. he even won over some convex with his lending library of pornographic magazines. and he managed to play gifts that chat them off action by day, while circling his prey, suspected serial killer larry hall with one on wall both irons at night. >> we talk about a lot of normal things, hung out, made him feel like i was wanting to be his friends. >> but it wasn't fast enough for keene who figure someone might recognize him and blow his cover. >> if you went by the fbi cyclical terms, i was pretty much staying right on pace, but from my point of view of being in this place, it was starting to get a very hard.

>> on the outside, the mission mastermind larry beaumont can only sit and wait for a second hand it was on how this crazy game of his was going. >> now, where you pacing the floor is waiting for updates during all of us? >> i don't know if i place the floors, but i was eager to get updates. i had information that was starting to trust him. they were talking, that kind of thing. >> but belmont at a police no idea that our breakthrough moment had arrived. it was a saturday night, keene and haul were in the prisons tv room watching america's most wanted again. >> and here comes this big prisoner. he's a big muscular buckeye. and he walked over the tv and turn the channel. and all of that me, and, goes low quietly, moms under his breath, says hey, that's not right. i was watching that. i thought, you know what? this is a prime opportunity for me. >> jimmy, a martial arts expert what continued working out in

prison was ready for this moment. he got up and change the channel back. >> he jumped up and he's slobbering all over the place. you turn the channel again i'll repeat dab head off! don't take that down tv! and he's going all crazy, and stuff, you turn the channel suspect down. and i just look at him and i turned the tv on again. he jumped up and start cutting edge me, and then i finally threw away a particular cause we're to hand that i know was going to send him off. as soon as i did, he took the wild hate maker swing at me and i come over with an uppercut, now, jim kicks him through three rows of chairs and jumped on him. and i beat him to a pulp. >> hall had a ringside view a saturday night a main event. afterwards, he staunchly defended jimmy as they retaliate or, not the instigator, one person officials interviewed eyewitnesses about the tv room brawl. >> your larry hall's new hero? >> yeah, i became his new best friend and hero to. >> jim you could sense that's heroes had brought him even closer to hall, and now he was ready to make a bold move. and the prison library, jimmy i

figured out a strategy to draw haul out on trisha tricia reitler. >> i notice he was getting his hometown newspaper and that was really important eventually for me to start cracking into his psyche. >> even the goal was tricia somebody, jimmy time to ask about something already public knowledge. halls conviction in the jessie roach case. jimmy faith that his mother lived in a while bought and read about jesse store case and other stories involving hall. >> she gets on if they were from the hometown where you're from. and i saw all those newspaper stories says that have killed multiple women. >> that was a big risk, though. >> it was all a big risk! and i said, larry, i don't care what you're in for, but be honest with me. that's all. just tell me what happened that. i don't want to be a friend of matter what. and i said, i've had girls do me wrong life in my life. and somehow girls can get under your skin and how that could be

bothersome to you. jimmy said -- >> he pressed all about jesse roach, and that last hall began to open up. recalling that september day in 1993. >> he was driving back a backcountry route and saw walking in our bicycle. >> paul then told jimmy exactly how abducted and killed jesse. >> you must have been revolted. >> oh, gosh, leicester is probably the hardest thing i've ever done in my life to have to sit there and pretend to be his friend, to listen to this kind of stuff, and i'll just rip him apart. but i knew what the mission involved. i know it was at stake for me, i know it was at stake for the peoples families. you know, there were still trying to find their daughters. >> a major transformation was taking place. jimmy was lying to care about more than just himself. and now, he was determined to squeeze the most crucial confession out of larry hall, and not just for himself, before the family of tricia reitler. >> i started thinking, i don't know where this is still going to lead, how long this is going to take, but something is now happening. >> coming up!

a disturbing discovery. has jimmy keene solved the mystery of the missing girls? >> what are these things anyway? and says, they watch over the dead, jimmy, they do! >> when dateline continues! ♪ ♪ ♪ knows the holiday's don't stop even if your appliances do. that's why during black friday every day we've got deals on lg appliances for your entire home. with the best deals of the season you can make the most of your season. don't miss our black friday every day deals. in store and online. my mental health was much better. but i struggled with uncontrollable movements called td, tardive dyskinesia. td can be caused by some mental health meds. and it's unlikely to improve without treatment. i felt like my movements were in the spotlight.

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alright, alright! tiny, branch, poppy... on another musical adventure. ♪ you're all i ever wanted ♪ i can't believe this is really happening. ♪ you're all i ever needed ♪ looks like your band days aren't behind you. grrr. ♪ ♪ ♪ lester holt: jimmy keene's five months of hell, five months making nice to a killer he despised, >> jimmy canes at five months of hell, by binds making nice to a killer who despised had finally paid off. hall had described in detail gruesome way, how you murder jesse roach. >> i've open that door and he's feeling that he can trust me enough now. >> but when i thought he needed

to wait a bit before going for the goal line. >> how did you roach tricia reitler? >> right, i had to slowly keep up trotting because i didn't want to think i was piling on. >> so we carefully plotted is next. most days, later he thought the time was right, he tried that hometown of play-by-play. >> again as, that you know the newspaper say that you killed this girl from the college over harris's. what happened there? >> jimmy couldn't be sure how he would react, that's way too, blind to direct. no, it was all clicking. according to jimmy, hall began to open up about tricia and that he drove his that right up to her that day he saw her outside school. >> he said that he tried to kiss her. when he, did she started fighting very violently. such it was a very strong girl, and she fought stronger than anybody had ever fought before. >> and idiot minute? >> he said that he had killed her and i knew that he had done it again. and these are his words, that he knew he had done it again. and he said he went way out and

there was a very her way out of the woods. >> hall gave a general location for tricia his body near a river and indiana. but jimmy needed more specific information. luckily, he seemed to stumble into it a few minutes later when he spotted hall inside the prison which up. i wish they could area. >> there's nobody at the door, no guys or anything. and i was in there. another came up from behind a, he had all days a different a little statues lined up. ten or 15 of them, maybe. i couldn't tell what they were at first. as i got closer, i know is he had a big map laid out. hey joe on that map unfolded that thing up really fast and slide it off the side of the table. and i go, what are these things anyway? >> he says, these are these little falcons in a, they watch over the dead, jimmy. says, they do. >> and i look like? >> a good sized space. >> jimmy had a strong feeling that the halls would carve the falcons and the map where journal keeping by a serial

killer. >> that map had a little red dots all over its of illinois, indiana, and wisconsin. you look down at this map and you can see all of those little spots on burial spots, this is where he's got somebody. >> all those months of dangerous, painstaking work had paid off. jimmy had cracked the case. mission accomplished! >> once you see the map, the falcons, you want to tell the fbi about it, right? >> i did, i went to the hotline i had for the fbi girl. i called. i got some type of voice recording and it was after hours. >> so jimmy left a message for his fbi contact to come get him, the map, and the falcons. his freedom and the answers to tricia his parents prayers were now just hours away. >> i was elated! i felt i wrap this up. >> you're expecting the troops to come marching in? >> expecting the troops to come marching in. and it didn't quite work that way. >> what he couldn't know what is fbi contact didn't get his voice mail. and he's won inside contact,

the chief psychiatrist, was on vacation. >> then you got a little full of yourself, didn't you? >> i did. i went back to my stall, i was happy. and i thought, you know what? 24 hours. they said they'll have me out of here. i've got what they need. this is it. so i went across to his cell over there. >> impulsively, jimmy decided he just couldn't leave prison without giving his fake friend a piece of his mind. >> they repulsive-ness i felt about him throughout the whole time i had to say behind being his friend and disdain, and this like i had for him, that i thought it was good for me to unload on him and tell him what i really thought of him, and who he really was. i, said you know, i'm going to be going home tomorrow, larry. and i said, your crazy killer. and i started calling him everything you can think of. >> with, that jimmy returned to his cell and waited to be released. >> you're going home the next day, you think? and then take another turn. >> but 5:30 in the morning, i hear some little lady in a white doctor smoke come walking in. >> it was called psychologist,

and she was a furious that jimmy had blasted her patient, turning him into an emotional wreck. >> she told the guards, grab him, and take him and throw him in the hole. >> so they put me in the hole and put me out there. and i'm not really worried, like so what, the fbi iss going to be here. it's only 24 hours, they'll have me out of here. >> but morning turned into afternoon into night, and the cavalry still hadn't arrived. this was a hard time at its hardest. >> you can see if it's day or night because you're in the whole. but you can tell it what time of the day or night's but what meals coming through the door slots. next thing you know, here's, breakfast, lunch and dinner. next to you know here's coming breakfast again, here's coming live. and i like where are these guys? my thoughts were, they did me wrong. they got what they needed, they got the info and they pulled the rug out from under me. >> while jimmy was wondering where they were, beaumont was looking for him, too. >> and we're, like where could

he be? he's in prison for god sakes! >> coming up! >> they lost you? >> yeah, they lost me. >> but how they also lost their best chance at finding the body of tricia reitler? ♪ ♪ ♪ >> when dateline continues! ♪ ♪ ♪

♪ ♪ ♪ lester holt: larry beaumont successfully snuck informant, jimmy keene, into springfield prison >> larry bowman successfully snuck an informant jimmy keene

in a springfield present a 1998. he just didn't expect to lose him there. >> because of your radar? >> yeah, disappeared, a couple weeks we don't know what happened. we were trying to find out and kind of getting frantic. >> two weeks later, only after keene psychiatrist returned from vacation today finally find jimmy. >> i know the fbi was there. and she kept apologizing, kept saying i'm really sorry! you know, something happened with the massive. >> at last, investigators got to search the wood shop and halls sell. but by then, the map and the falcons items jimmy believed could lead to trisha were gone. >> what were you thinking telling larry hall, you're out of here, and dressing him down? >> people probably wouldn't understand the mounting pressure that kettles are ready to boil over anytime. you know? it just felt good to unload on the guy. >> the problem, as i say, it even loaded on, you know you're against a, but nobody has that map. >> right. i'm disappointed i didn't wait another day or two, at least. i should've waited a few more

days. i wish i could've done more for them. but i did all i could do. and i feel that in my being, i did all i could do. >> meantime, the people who would benefit the most from its excess omission, tricia's parents only learned about the secret operation ten years later in 2008, when the story came out in a playboy magazine article. the right layers are thankful for jim's courage and the corroborating details he said he got from the home. but he fears that he blew his cover before finding other daughter. >> why would you have been so close? >> yes. >> and then give it up like you did? >> i try not to dwell on that at all because it at me and it's very hard to deal with it that he was that close. >> jesse roach's parents find consolation and that jesse was the victim who tripped up hall. >> if something good could possibly come out of losing jesse, it's the fact that he's in prison and he will never get

released. >> paul remains in federal prison with no possibility of parole. he sent made more murder confessions to reporters and investigators. >> i sincerely believe that there are young girls out there somewhere who are alive today because larry hall is in prison. >> do you think he had killed before? >> i think he did kill before and i think it would kill again. >> jimmy did tell beaumont that hall had killed again, but there was no documentation. it was just jimmy's word. so to be sure, the prosecutor made him take a lie detector test, and jimmy passed with flying colors! >> he was telling us the truth. so, the bottom line is we have further information that larry was responsible for tricia. >> a grateful beaumont decide to war with him for full credit for his brave undercover work, releasing him from prison and

scrubbing his criminal record clean. >> from his perspective, he expected to get nothing. but from my perspective, i mean of course he spent time in the loony bandwidth this guy, and got through this whole process. >> for 15 years, jimmy had been the only one to see those falcons that paul sent watch over the dead. >> the promise that they were forgotten, they disappeared, so we don't know what happened to them. >> you've never seen the falcons? >> now. >> i'll show you a picture, that's part of the falcons. >> dateline took pictures of a falcon when we met larry hall's twin brother. he said larry carved a falcon in a way trump at the springfield prison, and then mailed it to their mother. i showed a photo of that ballot into both beaumont and jimmy. what i like for you to see that after all these years? >> well, it's definitely bizarre. but it's also reassuring to me, leicester, and i'll tell you why. now, these falcons backs everything i've said. yes, that's exactly what it

looked like. >> after becoming a free man in 1999, jim i gotta spend five more years with a father he idolized before big jim passed away. and you try to make the most of his incredible opportunity. >> he sees the hall experience as something that gave him a second chance at life. >> when we last met with jimmy, he had done well in real estate, and co-written a book with author hillel levin " in with the devil ", which tells jimmy's compelling story of redemption. he says he also had several hollywood projects in the works most notably, the movie version of his book. but jimmy is especially proud that is booker re-energize that some cold case investigations. several targeting hall in indiana and wisconsin. at least one near our civil war reenactment site. investigators dug up locations where hala spent time over the years, and found articles of women's clothing and a belt modified with wooden handles. all sent out for dna testing. but cold case detectives following fresh leaves still

haven't developed enough evidence to bring charges. >> i did a good deed, and i did a lot of good things, and that's where i feel the redemption come to me. i've done something good for the things that i did wrong. ♪ ♪ ♪ >> that's all for this edition of dateline. i'm craig melvin. thank you for watching. ♪ ♪ ♪ good sorry morning and welcome to morning joe: weekend, let's dive right into the week's top stories. >> ron desantis, nikki haley,

tim