since season without a loss. next up wl likely be a rematch with the alabama crimson tide. we will beat them again but we have already won so i don't know why it matters. i don't know why they are rematching those guys. see you back here tomorrow night 6:00, 7:00 and 10:00 p.m. eastern. that's right. go tigers. go tigers. good night. -- captions by vitac -- www.vitac.com in the shameful conditions of haiti slums, as many as 300,000 children work as domestic

michel michelle dewey, 20 indianapolis, indiana. ap rall of these cases went unsolved. officials believed only one man knew what happened. >> we knew he was responsible for several deaths. p >> >> to get answers it a risky unusual plan send a convicted drug dealer under cover in to a dangerous prison to befriend and alleged serial killer. >> i'm not a serial killer hunter i said so how am i going to do this? >> reporter: at stake answers. >> wondering where she is and what happened. >> peace for grieving families. >> you want to find her and bring her home and you can't. >> and one man's freedom. >> you don't turn around and give out candy and say you are free to go. i went through hell and back.

earl ie each year donna gets her daughter tricia. >> i say hello to this picture every morning. say good morning, every morning. i look at that and i can hear her say, hi, mom. >> tricia was kind hearted, very smart. >> reporter: as a child says father gary, tricia lit up the room. >> she would sometimes bound in to the room, spread her arms apart and say ta-da, that type of thing. >> donna and gary brought tricia here to marion, indiana to attend a small, christian college. one spring evening in 1993, tricia left her dorm room for a walk. on march 29th, around 8:00 at night, tricia came here to this shopping center. she bought a sew da and a magazine and started walking back to campus, but then she disappeared.

>> phone call came a little after midnight and the voice on the other end of the phone said do you know where your daughter. >> she was last seen 8 monday night. >> her disappearance rocked the community and devastated her parents. >> whoever is responsible we'll never know what they have taken away from us. >> reporter: tricia's mother made a desperate appeal on the jerry springer show. >> hang in there and know we love you and we are doing everything we can to find you. >> reporter: despite huge media coverage and their pleas for answers none ever came. >> it's like she just vanished in to thin air. >> tricia was never found. >> young college students need to be aware. >> she was a student at iwu when tricia disappeared. >> we were advised to stay in our dorms if you were a girl.

>> a week after her disappearance, they needed to go to marsh grocery store. >> we thought it would be safe and fine. a couple of blocks away. >> exactly. not far at all. i can see the campus from marsh, you know, so what is going to happen? >> it was getting dark by the time they left the shopping center walking the same route tricia would likely have taken. >> we were maybe half way up the road when heather turned to me and said, did you happen to notice that brown van and i said, no. >> then the van passed again slowly. >> we still weren't alarmed. he came by again a third time. >> a third time. >> yep. really slow this time. looking at us. the hair on the back of our neck started to stand up. >> the van pulled right up beside them. >> how close? show me. >> his wheels were right on the side of the curb and this was me, this was heather and he leaned over, started to say something. at that point we were both like

run, just run. >> the girls called security, describing a two-tone van driven by a man with mutton chopped side burns. officers spotted the van and requested the driver, a man named larry hall. hall said he'd been look for a friend's address, but the address he gave didn't exist. so officers let hall go. september 20th, 1993, six months after tricia's disappearance, now 15-year-old jessica roach goes missing in georgetown, illinois. investigator gary miller got the call. >> we all knew that we had something really bad here. we had an abduction. >> jessica's badly-decomposed body was found in an indiana corn field weeks later but like tricia's jessica's case went

cold. >> there's a lot of times you wonder whether you will ever solve it but you know you will keep going and check everything out and recheck everything. >> reporter: for over a year, miller scoured local police reports and then a break. a vehicle reported in a county nearby. the owner, larry hall. >> he had been involved in stopping some girls. those girls were scared. they ran from him. >> in the last six months, hall's van was spotted by more than 11 girls in five towns close by. including those where jessica lived and where her body was found. now, miller contacted the police in hall's hometown to arrange for an interview. >> he initially said no. he hadn't been over here. >> reporter: miller had to coax hall to admit being near jessica's house. >> i said, well, would you remember if you stopped and offered girls a ride or asked

them to get in your van and he said he stops and talks to everybody. >> reporter: after a few questions miller took a gamble and put a photo of jessica down in front of hall in he immediately flinched. he turned to his right and put his hand up over his face, like he didn't want to see the picture. told me he had never seen that girl. >> reporter: later, a heart-breaking mystery. >>s this so little we can do to find her. i just want to bring her home. >> reporter: and the dangerous plan to solve it. tissue box (whispering): he said nasal congestion... nyquil: i heard him. anncr vo: tylenol cold multi-symptom nighttime relieves nasal congestion... nyquil cold & flu doesn't. you could spend as much as $200. olay says challenge that with an instrument that cleanses as effectively as what's sold by skin professionals

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recounts a tough start. >> i know when i was born my mother told me i was blue. that i hadn't had enough oxygen to me or something. >> reporter: identical twin sons growing up hard. in the hall home, this was little money and lots of problems. author leaven interviewed larry hall it. >> was a very cluttered household. they were raised with dysfunction. >> reporter: neighbors say their mother was domineering. their father drank and sometimes turned violent. he worked at the local cemetery. what was it like growing up next to a cemetery? was it creepy? >> not at all. not for me. at 12 years of age, larry and i started to work at the cemetery. >> reporter: as he grew older, larry had problems fitting in at school. >> he was always the back ward twin. i was the more dominant,

outgoing twin. he hung out with what my wife and i and a lot of fellow classmates called the misfits or the stinky crowd. >> reporter: still the boys were best friends and as young men, gary and larry developed an unusual new hobby as civil war reenacters. >> met a lot of friends during that time period and i was able to travel around, meet them at the battlefield and go on tours and stuff. it was i a lot of fun. >> reporter: larry was hooked, even growing mutton chops from his hairline to his jowl. though the reenactments helped larry to make friends he still struggled with women. >> what was larry like around young women growing up? >> very awkward, quiet, back ward. >> reporter: did he ever talk to you about these urges he reportedly says he had urges about women. >> oh, my gosh.

it was absolutely -- it was out of bounds. i had no idea. >> reporter: jimmy keen grew up 135 miles away in illinois. he didn't know larry hall and he had no idea that their worlds would some day collide. >> third down and five. 25 yard line. >> for jimmy keen, life couldn't have been more different. while hall was an awkward outsider , jimmy keen was a star. especially under the lights on friday nights. >> we would come out here. the lights would be on. the whole stadium would be

completely full and the crowd would be roaring and it was a very euphoric, unbelievable high. the friday night games were the biggest rush i have ever had in my life. >> a gifted athlete, he lettered in two sports, studied martial arts and inspired fear in everyone he faced. do you like having people terrified of you a little bit. >> in that kind of sport, sure. you have to. that's why they called me the assassin. >> reporter: you were the assassin. >> my nickname is the assassin because i put somebody out of every game i ever played. >> reporter: keen wasn't just the hometown hero. he was his father's name sake. >> my dad sat up in the corner over here. if i made a spectacular play he would always do the you did good son. >> how often was he in the stands. >> every game. he never even missed practices.

>> reporter: did that mean a lot 0 to you? >> he was my backbone. >> reporter: keen was as popular as he was athletic. >> reporter: you were a legend. >> no doubt. they had posters of me all over town. everybody knew who i was with my sports abilitity. so i was the most popular guy around. i was voted most popular guy in school. >> reporter: jimmy seemed to have everything, except enough money to keep up with the rich kids at school and he only saw one way to get it. he started selling drugs and quickly learned he was good at it. >> you are making decent money. you don't think is this a wrong thing that you are doing. so i kept growing in it to and growing in to it and by the time i was 20 years old i was sitting on top of an empire. >> reporter: by dean's on account he was pulling in a million dollars a year. he was addicted, not to the the

drugs but the money. >> it was hard to walk away from that kind of money, especially a 20-year-old. >> reporter: so he didn't. and that single decision would change the rest of jimmy keen's life. and bring him face-to-face with an alleged serial killer. so 12 seconds ago. we should get him a present. thanks for the gift basket. you're welcome. you're welcome. did you see hr just sent out new... ...office rules? cause you're currently in violation of 6 of them. oh yeah, baby? ...and 7. did you guys hear that fred is leaving? so 30 seconds ago. [ noisemakers blow ] [ both ] we'll miss you! oh, facecake! there's some leftover cake. [ male announcer ] the new htc vivid. stay a step ahead with at&t 4g lte, with speeds up to 10x faster than 3g. ♪ [ electronic beeping ] [ male announcer ] still getting dandruff? neutrogena® t/gel shampoo defeats dandruff after just one use. t/gel shampoo. it works.

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>> extra hp. >> reporter: by the early '90s, jimmy keene was on top of the world. his booming business afforded him a lavish lifestyle with large homes, souped up corvettes and an endless supply of women with. >> i would have 30, 40 keg parties with volleyball nets, live bands we'd have literally a thousand people or more sometimes. they were giant huge parties. >> you were the men that women wanted to be with and guys wanted to be best friends with. >> something like that. >> reporter: back then he owned this 6,000 square foot home. >> right behind that is a golf course. >> reporter: he says he didn't stash the drugs here.

>> this is a walk-in closet. >> reporter: but this was always a place to hide his fortunes. >> this was a hidden trap door that you could open and when you would open it, you have another hidden closet back in here. you can see my old safe is still here, and this was pretty much my ft. knox room. >> reporter: for 15 years, keene's empire remained hidden and growing. but as he lived the high life, his father fell on hard times, nearing the brink of financial ruin. >> my dad to me was superman, and to see him in such a hurt way really killed me. >> reporter: so jimmy used his drug fortune to bail his father out and then continued to support him. >> thoen venn though it was coming from something wrong, i felt i did something right to make his world right. >> reporter: but the money never seemed to be enough and keene couldn't stopwatching his back.

by the fall of 1996, the pressure of life in the fast lane was catching up. >> i had woke up in the middle of the night and i was laying there wide awake and i said i am tired of running like this and i want it all to end. >> reporter: it was all about to end but not the way that keene planned. two weeks later -- >> i heard the front door rattle and i thought it was just the wind because it was in november. next thing you know the whole door went off the hinges and they came in with guns drawned and black uniforms. move, or we will blow your head off. move just one time. >> reporter: for jimmy keene everything was over. >> everything stops and goes in slow motion. don't even feel like it is real. >> reporter: he plead guilty hoping to minimize his sentence. and at first federal larry beaumont was willing to

negotiate. >> we initially tried to flip him to see if he would give us other drug dealers at the time and i think he refused so our reaction was to make sure he gets the maximum penalty. >> reporter: beaumont got his way and keene got ten years. it knocked the life out of him and broke his father's heart. >> any hopes and dreams he had for me at that point in life were gone. he was crushed. he was very crushed. >> reporter: jimmy keene could not imagine a way out, nor guess that a man he'd never met might someday provide him one. november 1994, wabash, indiana. it had been two weeks since larry hall recoiled from a photo of jessica roach. an investigator,ing gary miller, had a gut instinct. >> i think we are on to something.

this guy portrays this weak, timid person, but, you know, i don't think he truly is. >> reporter: miller thought hall was vicious, and as the investigation unfolded miller also thought he knew how hall abducted jessica roach. >> when he first seen her, she was riding from the house going down this way. >> reporter: hall followed and stopped to talk. jessica got scared and backed away. >> that's when he opens the door, grabs her. there's a physical confrontation, where he overpowers her. put her in his van and left. probably going up this road right past her house. >> reporter: in an interview n the wabash police station, hall surprised investigators by explaining what happened next. i tied her up, but i can't remember with what. i took her pants off.

hall said he raped her and let her off through the woods. i laid her up against a tree and put a belt around her neck and she stopped breathing. hall said he strangled jessica from behind so he didn't have to see her face as she died, and that wasn't all. all of the girls looked alike, hall said. i cannot remember all of them. i picked up several girls in other areas, but i can't remember which ones i hurt. several girls in other areas. there were more victims than just jessica roach. hall said he'd also been near the campus of indiana wesleyan university, where tricia reitler disappeared. >> i was over there because i needed to be with somebody. it was a small shopping center. i had a van. hall said he raped and strangled

a girl here, too. then he identified his victim by pointing to tricia's picture. tri tricia's disappearance had remained for 18 months. >> police insisted on another suspect, tricia's parents kerry and donna still suffered. >> the urgency was great and the heart ache was great and the anticipation and hope. >> reporter: hall's confession meant the reitlors may find their daughter and gary miller had found the killer of jessica roach. but the next day hall changed his story. >> as i was talking to him, he said i was just telling you about my dreams. it didn't really happen. it was just my dreams. i said larry that is not what you said. you didn't like to talk about it because you didn't like the

things you done but you never mentioned it being a dream. >> reporter: but he stuck to his new story. larry hall was recanting frg. everything. rol. [ man 2 ] yummy. i got that wrong didn't i? [ male announcer ] want great taste and whole grain oats that can help lower cholesterol? honey nut cheerios. the other office devices? they don't get me. they're all like, "hey, brother, doesn't it bother you that no one notices you?" and i'm like, "doesn't it bother you you're not reliable?" and they say, "shut up!" and i'm like, "you shut up." in business, it's all about reliability. 'cause these guys aren't just hitting "print." they're hitting "dream." so that's what i do. i print dreams, baby. [whispering] big dreams. a vacation on a budget with expedia. make it work. booking a flight by itself is an uh-oh. see if we can "stitch" together a better deal.

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here's the headlines at this hour. herman cain is out the race for president after announcing he is suspending his campaign. in recent weeks he denied allegations of sexual harassment an an atlanta woman's claims she

had a 13-year affair with him. by suspending his campaign he is allowed to raise money to cover campaign debt. police say they found country music singer mindy mccready in a closet in her boyfriend's home. mccready who has battled drug addiction has visitation rights. this poe is in protective custody and mcreid crede has not been charged with a crime. the lsu tigers are one game away from a national championship. louisiana state university flattened the georgia bull dogs in the sec title game. they have won 13 games this season. the next up for the tigers will likely be a rematch for the crimson tide in the national championship game in new orleans on january tth. go tigers. those are the headlines this hour. i'm don lemon. keeping you informed. cnn, the most trusted name in news.

larry halled a confessed to killing jessica roach, tricia re tirks ter and two other women and took it all back claiming it was just his imagination. >> i did confess to police that i had dreams that i did things. >> reporter: but investigator gary miller had other evidence, like the witness who drove by this corn field the night of jessica's murder. >> that person testified he was absolutely sure that when he went by here on that night there was a van and a guy coming from the corn field and getting in his van. >> reporter: a search of hall's house and van revealed heed been casing out small college towns and keeping suspicious notes.

seen joggers and bikers, many alone. check colleges, parks, seen some prospects. hall also made lists for the hardware store. buy two more plastic tarps, cover all floor inside of van and hall wrote himself troubling instructions. no body contact, buy condoms buy two more leather belts, find one now. amongst hall's things, investigators found newspaper clippings about roach and reitler, possessions from other missing girls and pornographic pictures that hall had altered? in the pictures he had drawn a rope or belt around the neck of one on the left side, he had drawn blood. >> reporter: hall insisted it was staged to make a play for attention to feel important to police.

>> i have put a punch of stuff in that van i drove around because i knew they would eventually search my van and find them. >> reporter: during larry's trial, his twin brother gary tried to provide him an alibi. still federal prosecutor larry beaumont got hall convicted of kidnapping jessica roach. >> the federal system, if you are guilty of a kidnapping if the kidnapping resulted in a death under the sentencing guidelines it is mandatory life term. >> reporter: the jessica roach case was over but the disappearance of tricia reitler remained unsolved and her parents would not stop looking. >> we walked the sides of the roads, the river beds. we looked under the culverts. we ended up going to crack houses because somebody had a lead. >> if you see something on the side of the road, a garbage bag,

whatever. it is like could that be her? it was a horrendous crime to lose your daughter and never find out what the heck happened to her. >> reporter: larry beaumont kept looking, too. >> i made arrangements on a couple of occasions to go out and look for the body. >> reporter: beaumont called in specialized military and law enforcement units to search. >> we weren't able to find her. rather than give up, it occurred to me that obviously larry hall knew. >> reporter: beaumont needed answers and turned to an unlikely source to get him. he needed someone to befriend larry hall, someone charismatic and on the inside. larry beaumont needed jimmy keene. beaumont had sent both keene and hall to prison. now he hatched a risky plan that would bring them together. keene was ten months in to his sentence when beaumont brought him in to talk. >> scared me.

i thought this was some trick. >> reporter: keene watched nervously as he pushed a folder across the table. >> first thing i seen was the picture of a mutilated dead girl and i flipped to the next page and there was a different mutilated dead girl. >> and there was a portrait of tricia reitler. at that moment i looked at him and he said we need you to help with this case. >> reporter: he wanted him to go undercover from a low-security lockup to a dangerous prison and befriend alleged serial killer larry hall. >> he said if you can get solid confessions from him and locate the bodies that are still missing we are willing to completely wash your record. >> reporter: keene's mission, to learn where tricia reitler was buried in the purpose of the operation was to find the body. >> reporter: beaumont made it clear, no body, no early release. keene would have to serve the rest of his ten-year sentence.

but beaumont believed keene could do it. >> he is smart, articulate, not afraid and i knew he wanted to get out. >> reporter: for keene it was a chance at redemption, to restore his family name and says author liv on the get his life on track. >> this deal was a way for him to get home and a way for him to do good, to kind of take this bad thing he had done and to somehow turn it inside out and make it something that would solve a crime. >> reporter: but it wouldn't be easy. fair to say he was risking his life. he could have been killed. >> it was dangerous, absolutely. it was highly risky. these people in those type of places don't have anything better to do than to try to hurt and kill you, too. consider keene was unsure but a phone call home put his doubts to rest. sdooen keene's step mother said his father had suffered a

stroke. >> she said he's in really bad shape. we wish you were here. this is terrible you are in the spot where you are in right now because we could lose him. >> reporter: he needed to get home fast and there was only one way to make that happen. he had to face an alleged serial killer first. >> i decide, you know what, however bizarre or how far out or whatever this mission that beaumont wants me to go on i'm going to do it. with the capital one venture card we get double miles on every purchase. so we earned a holiday trip to the big apple twice as fast!

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driving up to the prison in springfield, missouri, jimmy keene didn't know if he had made the best or worst decision of his life. >> i started to get cold feet. i looked at the u.s. marshal and i said, listen, how do we know if beaumont will live up to his word. they all assured me he would. i said i'm not sure i can do this. >> reporter: there was no turning back and he needed to prepare. agents had warned him to be careful. >> we don't want you to approach him for at least six months because she a cagey individual. if he senses one thing wrong he goes in to a shell like a turtle and you will never get him back out once he is in. >> reporter: keene didn't have time to wait. he needed to get him to his

ailing father. so hours after becoming a springfield inmate he spotted larry hall and made his first move. >> i made it a point for us to bump shoulders together. as we gently bumped shoulders together, i said, excuse me. i said, listen, i'm knew here you wouldn't happen to know where the library was, would you. >> keene offered to show him the way. >> i slapped him on the shoulder and said i appreciate that from a cool guy like you. >> over the next week keene watched hall's every move, from his cell across the hall. >> i walked up to him and said this is where i am at and i said are you in this area and he said, yes i am right there. i said that is great. you are right by me. i told you you were a cool guy and i am glad you are by me and this and that and that is when he offered if i wanted to have breakfast with him and his friends. >> reporter: keene was making progress, slowly gaining hall's

trust but life at springfield was complicated and dangerous. so keene figured out a way to use violence to his advantage. it was a saturday night and hall was in the tv room mesmerized by an episode of "america's most wanted" about serial killers. suddenly another inmate approached the tv. >> you could tell this guy had been in a long time. he was a big, buff guy. he just walked up to the tv and looked at everybody in there and decided to turn the channel. and he turned it. i found this very interesting. larry looked at me and very quietly mumbled under his breath, hey, i was watching that show. >> reporter: keene leaped in to action and knocked the guy out. >> i nailed him with an upper cut and kicked him through three rows of chairs. he was beat up and had to go to the hospital. and they took me and put me in the hole. >> reporter: it was worth it and

a breakthrough at hall? he looked at me as a guy that he could look at and say he thinks i'm cool, coming from him that is a compliment and he is able to protect me. >> reporter: now keene had hall's trust and had him talking. one night, in hall's cell, he told keene the truth about what happened to tricia reitler. but what hall told keene was different from what some investigators believed. it was his story along with some evidence that created a road map i wanted to try to follow to figure out what happened to trishareitler. trisha would have left this supermarket parking lot, walking just a couple of blocks back to

campus. somewhere along this road, hall told keene he got trisha in to his van. when she fought off his advances, he says he choked her to keep her quiet. hall told keene he blacked out and when he woke up, trisha was naked and lifeless. days after her disappearance, investigators found her blood-soaked clothes here, just one block from the supermarket. hall's own notes indicate what might have happened next exactly one week after tricia's disappearance hall wrote, cut out stained carpet, vacuumed van thoroughly, buy new hacksaw blades, clean all tools. along with his notes was this address, 700 west slocum. where in the woods, half way between marion and wabash and it

is possible that somewhere, out here that tricia reitler is buried. >> he says so he got some lime together a shovel and lantern and he drove her to the woods and buried her in the woods. >> reporter: he admitted to you he buried her in the woods. >> several times he admitted that, yes. i basically made him feel like it was okay for me to tell the secret. >> reporter: keene needed a secret that would set him free, the exact location of tricia's body. weeks later he thought he nailed it when he found hall hovered over a map in the prison workshop. >> it was a map with red dots over indiana, illinois, wisconsin and he covered it up really fast. >> reporter: lined up at the edge of the map are a dozen wooden falcons. >> i said this is pretty cool, did you make these and he said yeah, i make them. it is really cool, isn't it,

they watch over the dead. >> reporter: falcons to watch over the dead and a map marked with dots. it was the information keene thought would surely lead in the exact location of tricia's body. >> in that moment, did you think this is my ticket to freedom? >> i did because i thought this is it. i have solid confessions out of him. we know specific details. we know how he's done it now. >> reporter: keene believed he had his answer that he would soon be free. that he was done forever with larry hall. so that night, at lockdown, keene decided to tell hall what he really thought. >> i told him he was a [ bleep ] sicko. i told him he's insane. i told him you are one of the most despicable human life forms on the planet. at this point he slid away and was terrified of me at moments and he said beaumont sent you, didn't he. beaumont sent you, didn't he.

>> reporter: keene had blown his cover and his outburst landed him in solitary confinement. >> it took some time that we found out that jimmy was put in the hole so he wasn't able to communicate with anyone on the outside. >> reporter: by then hall's that had the falcons had disappeared. worst of all as keene was let out of springfield prison to face larry beaumont he didn't know if what he had learned was enough to set him free. with less chronic osteoarthritis pain. imagine you, with less pain. cymbalta can help. cymbalta is a non-narcotic treatment that's fda-approved to manage chronic musculoskeletal pain. one pill a day, every day, can help reduce this pain. tell your doctor right away if your mood worsens, you have unusual changes in mood or behavior or thoughts of suicide. antidepressants can increase these in children, teens, and young adults. cymbalta is not approved for children under 18. people taking maois or thioridazine

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during his months in springfield, jimmy keene got larry hall to provide details about several murders hall was suspected of committing including tricia reitler's. but keene hasn't met the original requirements. >> i told him if we didn't find the body, no body no credit. >> reporter: sitting in his prison cell jimmy keene desperately hoped he had done

enough. >> are they going to be fair and give me what is justifiably right on this or say here's six months. it was a crap shoot. >> reporter: without a location for reitler's body, beaumont had a decision to make. >> i made the decision to take a polygraph test to verify what he was telling us was true and he did make a legitimate effort to do what we sent him to do. >> reporter: to beaumont urged the federal judge to give him credit for time served. sdwrimmy keene became a free man and returned home to his aging father. what did you feel like when you were finally released? >> i was happy as could be. it was a bizarre roller coaster i went on. it was redemption at its best. >> reporter: keene had five more good years to be with his father before big jim passed away. >> we both realized once i got out there that there is a better

world than just always in a constant dash to make money. it was more like, look, let's just enjoy each other while we are alive here, you know? >> reporter: it was closure for keene but not they are the families of the alleged victims of larry hall. for years there was no progress and no relief for people like donna and gary reitler. >> as a parent, there's a part they have let her down and that you want to find her and bring her home and you can't. i mean we've done pretty much physically everything we can to find her and there's somebody out there that holds that one answer for us. >> reporter: beaumont, too, felt he had done all he could and that the pursuit of larry hall was over. >> there wasn't going to be no further prosecution from the federal perspective. he's already serving life in prison. he was done. >> reporter: once again, larry hall had slipped off the radar

and it could have easily remained that way, except for jimmy keene. first keene's story of strange redemption was featured in a "playboy" article and then a book written by keene and hillell levin. >> once we were able to write about what keene went through things happened. >> reporter: it refocused attention on larry hall. helped to reopen cold cases and put pressure on his twin brother gary. now gary stopped defending larry and started talking. >> larry just like jimmy keene calls him, and he is, he's a baby killer. >> reporter: you think your brother is a baby killer? >> i don't have no doubt in my mind. >> reporter: do you think your brother killed more than jessica roach? >> yes. >> reporter: do you think your brother killed tricia reitler. >> yes.

>> reporter: raina ricin, michelle dewey. >> yes. >> reporter: as gary talked more openly, detectives approached him asking for help. >> i went with the indianapolis detectives down to try to get my brother ito confess. he made me leave the room. he did, in fact, confess on tape to 15 serial murders. >> reporter: larry later retracted again. while he can't ever seem to stick to one story, he does sometimes seem to have regrets. >> i didn't want to keep living my life the way i was living it. i wanted things to be different, you know, but i guess i didn't really do the right thing to change the way my life was going. >> reporter: larry hall refused our request for an interview. he's never been charged with crimes against anyone other than jessica roach. but keene's story has caused officials across the country to

take another look at hall. november 2010, the investigators interviewed mr. hall at a federal prison in north carolina. >> in that interview, hall admitted to murdering laurie and provided clues where to find her body. >> there are multiple agencies looking in to him and disappearances. >> he may have had more victims than ever imagined. >> we understand it is more extensive than we ever thought. not 20 but maybe 30 to 40 in terms of the victims. >> reporter: that leaves 30er 040 families still awaiting answers, which is why, says levin it is criticalle that serial visions do not stop. 18 years after tricia reitler vanished her father now believes larry hall knows where to find

her. >> i think if larry knew what we go through on a daily basis, wondering where she is, and wondering what happened. i don't think he would have any choice to confess and let us know where she is buried. >> reporter: donna is not as sure. >> he confessed and recanted. without a body, it's just another possibility. more than anything else they just want their daughter back. >> to have a place to lay her to rest. just to be able to sit and talk to her. >> reporter: as for jimmy keene, his truth is stranger than fiction. he's gone from football standout to drug dealer to undercover operative. and now to screen star. with his story