i learned that he was arrested. i was shocked. i was just so confused. i didn't think it was real. i didn't think it was possible. >> in the rarefied world of the ivy league, he is what the package. star student, gifted athlete, wildly popular. >> he is one of the nicest guys ever. >> no one could understand how a weekend visit to his parents'

house ended in gunfire. >> who's already dead? >> charlie told the officers outside he was going to kill my mom. i had to do it. >> yes. >> a brave son presenting hotec mom, a harrowing story, but was it true? >> he's seated behind the desk, the father. this seems to be an execution. >> was this campus hero actually a cold-hearted killer? >> he sends a letter to his fraternity brothers called "showtime." >> one of the things always in question was, was charlie covering up for someone else. >> a trial where nothing went by the book. >> three of the jurors were crying really hard. >> they're turning around in their seats, they're getting yes motional. they see what's coming. >> he was becoming unhinged. welcome to "dateline" extra.

i'm tamarin hall. it seemed like charlie tan had the whole world ahead of him, but then charlie's father was killed in the tan home, and everything changed. police were being told one story, but the evidence was telling them another. and there were also three 911 calls. did one of them hold the clue that would unlock what really happened on that wintry night? here's dennis murphy with "house of secrets." >> cayuga. that's cayuga lake in ithaca, new york. where you'll find one of the most prestigious universities in the world. cornell, the ivy league. more than 13,000 undergrads here working towards degrees will with good fortune take their

places in medicine, the law, the arts. there's no doubt a cornell education can be a gold-plated entrance to adult life. and only the best need apply, students like charlie tan. he was so kind, his classmate featured him in a video, random acts of kindness. >> not just a great kid but the greatest of great kids. >> reporter: charlie was the son of chinese immigrants who became "mr. everything." scholar, class president, the guy with the cool friends, hannah valentine opened up her parents summerhouse to charlie and his other teenaged pals. >> he was always happy and energetic. >> the guy that tells jokes? >> everybody knows him. they'll walk in. the room lights up, he starts telling a funny story. >> so you'd think charlie tan bass another ivy league overachiever poised for takeoff and great things to come, but

that's not his story. this is about the charlie tan, keeper of secrets, and quite possibly something much worse. but before all that, charlie was as deserving a kid as ever got an ivy league acceptance letter. >> he was really excited. >> ivy league. >> he was super happy. >> so in the fall of 2013 charlie tan left his parents' home near rochester, new york, and drove the few hours to cornell. his exciting new chapter in a life already filled with early achievements. he pledged to frat. he wasn't big enough for the varsity football team, so at 165 pounds he was directed forward what they call a sprint football team. >> i met charlie the first day, freshman year, actually. i had just gotten my locker and charlie was one of the first people i met. >> quarterback rob pinola. i was a leader on the team, both by example and his words.

>> rob and charlie became not just teammates but great friends. >> he's one of the most generous and selfless people i've ever met. >> he impressed his teammates and coach. >> good football player, always quiet, always got a smile, never late, good worker, good kid, solid. >> go back to the handsome house in the rochester suburbs where charlie grew up in his teenage years. it's a place called pittsford, new york. >> it's a very nice community, very picturesque community. >> thick lawns, nice cars in the garage? >> lots of executives from kodak and xerox and lawyers. >> charlie was younger of two boys. his parents, born in china lived in canada before moving to upstate new york. his dad ran a tech business that thrived. the home radiated upper middle class comfort. his friend anna had been there on occasion. >> i went over to his house.

i didn't know his parents very well. i talked to his mom a couple times, but i didn't really have much conversation with them when we were there. >> little was known about his parents, and charlie didn't offer any details if someone asked. if he had secrets, sorrows, they weren't for the outside world to know about. >> he's very good at like keeping his emotions in. >> i have no idea what the home situation is like. i didn't know before, and i don't know now. >> other than a few 911 dispatchers and a few operators, the wider community certainly knew nothing about whispers of domestic violence. >> it's a tough part of his life. >> the record is still sealed, but it's safe to say the tan house was known to authorities. go back to cornell. it's winter of 2015 and charlie is now a sophomore. on a chilly thursday morning he stopped in unexpectedly to visit his football coach. there is a softer side to this

coach than drills and xs and os, and his kids now he'll always be there for them. >> our rule is if you have a problem come in and we'll close the door. if you need somebody to talk to, we're here. >> now it was charlie who needed a shoulder or something. >> he said i can't make weightlifting. and i said what's problem? he said i got to go home. >> clearly something was eating at the student. >> i asked if there was anything he wanted to talk about. he declined. he just said he had to get home. >> it wasn't spring break. classes were in session but charlie got in his car and started the drive to pittsford,pittsford pittsford, 100 miles away. he didn't know it, but his life as a student would soon be over. >> very squared away, got his act together. knows what he's doing. >> only charlie tan wasn't at all okay. it snowed that night, a muffling blanket, covering the home where

something awful was about to happen. >> coming up, why did charlie need to rush home? the first clue coming from a friend's mom who called 911. >> he didn't give us a lot of details. i'm just worried that he might do something. >> and then charlie's mom makes a 911 call of her own. >> you said you heard a shot? >> when "dateline" extra continues. ♪ [cheering] ♪ the highly advanced audi a4. ♪ still not sure whether to stay or go on that business trip? ♪ should i stay or should i go? ♪

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welcome back to "dateline" extra. i'm tamarin hall. charlie tan was studying at a prestigious american university. he was bright, athletic and made friends easily, but when it came to his family, he played it close to the vest. so when his name was linked to violence in his hometown, it

took the campus and his friends by surprise. here's dennis murphy with "house of secrets." >> when charlie tan left cornell and made the 100-mile trip home on a thursday home, his football coach knew he'd been upset. >> i asked him to call me when he got home, just so i'd know he was okay. >> and that very evening in pittsford, new york, charlie spent time at a friend's house where he seemed despondent, sad, possibly depressed. not the charlie he'd known since childhood. after charlie left, the friend and his mother were so concerned they called 911. was charlie suicidal? >> he didn't give us a lot of details. i'm just worried he might do something. i don't though if anything's going to happen, but i just can't take a chance. >> all right, i'm going to have them go to that house and check on him. >> and a deputy did just that. detective steve peglow of thesh.

>> he said that charlie was upset about things, had come home to talk to people, was working out some things and he'd be okay. >> it was now late thursday night, almost the weekend. charlie didn't go back to school friday morning. and come monday, he wasn't at practice. >> wasn't really much i could do any way other than text him, and he didn't respond. >> and then it was monday night. something awful. >> 911. what is the nature of your emergency? >> yes, i -- >> the caller so distraught confused the dispatcher. >> ma'am, i can't understand anything you're saying. does anyone need an ambulance? >> it was jean tan, charlie's mother. >> did you say you heard a shot? >> yes. >> does someone in the house have a gun? >> now the garbled story is

coming into focus. shots fired, the husband of the house is shot dead. >> are you in a safe spot? >> yes, i am. >> we need you to wait outside of the house for the police officer's safety. >> detective peglow was soon on the way to coach side lane. he still had a garbled account from the 911 call. who had shot whom? >> he was trying to protect me. >> your son was trying to protect you? >> yes. >> it looked like what we would call domestic murder. something had just occurred. >> or arrival, the first deputies saw a young man who would turn out to be 19 year old charlie tan standing in the driveway with his mother. >> they were outside the house. let those people come out. they asked, you know, who else was in the house. >> in the next moments, the deputies heard the son tell a story that sounded like

self-defense. he to shoot, he said, to save his mother. he'd used a shotgun. >> charlie said, my dad's in there. he's dead. i had to do it. he was going to hurt my mom. >> the father is shot because the boy feels his mother's in jeopardy. >> yes. >> it was getting late on a frigid february night. the deputies put the son and mother in the patrol car. >> they asked him where the shotgun was. there was some mention of it be being in the garage. >> reporter: after securing the weapon, they made their way to the second floor. in the home office they found the victim. >> the father is behind the desk? >> spent shotgun shells are right there in that doorway area. >> the detective would quickly learn more about jim tan, father, husband and bigman. -- businessman. >> successful executive. >> by all accounts, yes. >> but was the successionful businessman also an abusive husband? the detective looked around the

household as crime scene processed a shotgun killing upstairs. they came upon an appointment card for jean tan to appear at domestic court. but detective peglow was no rookie. his investigation into charlie tan and what happened inside that home was just getting started. >> one of the investigators found what appeared to be newly-taken passport photos, along with a list of prominent local defense attorneys. >> that's interesting. >> yes, sir. >> the story is, i had to do it, but you're not taking that at face value. >> correct. >> coming up, a discovery on jim tan's computer triggers suspicion about his time of death. >> how many times earlier is the last e-mail check? >> four. hmmmmmm..... hmmmmm... [ "dreams" by beck ]

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learn more at cancercenter.com/experts not to be focusingo finaon my moderatepe. to severe chronic plaque psoriasis. so i made a decision to talk to my dermatologist about humira. humira works inside my body to target and help block a specific source of inflammation that contributes to my symptoms. in clinical trials, most adults taking humira were clear or almost clear, and many saw 75% and even 90% clearance in just 4 months. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal infections and cancers, including lymphoma, have happened; as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure.

before treatment, get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common, and if you've had tb, hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. ask about humira, the #1 prescribed biologic by dermatologists. clearer skin is possible. welcome back to "dateline" extra. i'm tamarin hall. police arrived at the home of jim tan, to find him lying behind the desk in his home office, shot dead.

his son charlie told police he did it. he said he was defending his mother. so case closed. far from it. let's return to dennis murphy with "house of secrets". >> deputies canvassed the neighborhood, but no one had heard the gunshot blast that killed jim tan, but then this homicide wasn't a whodunit. the son said he had been the shooter. he had to do it, he said, to protect his mom. >> self-defense is something we'll listen to. if something happened the law will bear that out. so we wanted to speak to him. >> that same night, charlie and his mother were taken down to the station to tell their stories. >> were you able to get a statement from charlie? >> we were not. his lawyers would not allow that. >> his lawyers were already on scene? >> without the cooperation of the admitted participants, the detectives were on their own. it turns out a very large piece

of evidence was waiting to be found right there in their very office. a report from the house on coach side lane. >> 911. >> just two weeks before the shooting, police records show the wife placed another 911 call. >> yes, my name is jean tan, and my husband just beat me up. i need your protections. >> are you injured? >> yes, he choke me, and i'm so scared. please. please help. oh, he's coming. no. please come. >> the dispatcher heard what sounded like an ongoing fight between husband and wife. >> hello. sorry. >> no. >> no, no. >> sorry about that. >> help me, help me! >> no, no. >> a deputy was sent to the house and noticed jean tan, the

wife, was clearly distraught. >> they found that jean was still upset. she had some red marks on her neck. but that there wasn't enough there to charge jim tan with a crime. >> so incident over? >> that night. >> he tried to kill me, but nothing results in charges or makes it into the paperwork. >> right. >> so a history of abuse, it appeared. if that were the case, charlie had told no one in his circle at cornell university. the coach hadn't heard from charlie in days, and now his phone rang. >> campus police called me up and asked me to come to his fraternity house, which i did. they wanted me to know that charlie's father had been killed. it was rugged. we got a bunch of players in the fraternity. and everybody was obviously very upset. >> charlie tan admitting that he'd shot his father to death. >> i think it was probably

disbelief more than, and shock that this occurred. >> we had a team meeting about it, but immediately after, there was so much support for him. and everyone was amazed by the support. >> from the get-go, there was no debate. the entire frat and team had charlie's back. >> not just the football team, but everybody on cornell campus that he knew well was showing support for him. everyone was always trying to help him and ask if there's anything we could do for him. >> to his friends at home, there was shock there of course too. and yet the heartbreaking story of charlie tan protecting his mom by any means necessary made some kind of weird sense. he was, after all, the kid who was always trying hard to help. people talk about him being selfless. >> yeah. >> lives to help other people. >> yeah. he would do anything for people. >> close friend anna had a hard time wrapping her head around charlie doing anything violent.

the charlie she knew was a thoughtful kid who did things no ordinary teenager did. >> my mom went through the cancer, and he was always there. he brought her like gifts and stuff. so he was always there supporting anybody. >> so anna would be there too, supporting charlie through this difficult time. a friend to the end. neither she nor anyone else could have guessed where the investigation was heading next. that the detective who'd examined the scene that night was wondering if there was more to the story. it was all obvious right away that something was off with the working theory of the crime. a heat of passion, self-defense homicide. >> we were there hours, obviously searching every bit. one of the things that was noticed by one of the investigators is just, you know, the dried blood that was all over. >> dried brood. the timeline and the whole story, in fact, demanded a closer look. >> it's certainly one of the things that starts to get your attention. hang on, there might be more. let's make is sure we'ren o the right path here. >> and there were other

observations that set their timeline back. on jim tan's desk computer where he had apparently been working when he was killed, there were unopened e-mails going back before the weekend. >> jim is trading e-mails with an employee. and at some point after that, he clearly stops using his computer. he is no longer sending. he's no longer opening. >> and as detectives poked around that office monday night. >> how many days prior is the last e-mail check? >> four. four days. that was really a big thing for me. this is a guy who ran his own company with employees and activity. >> going back four days. that put the shooting back to that thursday night charlie came home from cornell. and a four-day-old crime scene would also explain what had been plainly obvious to the seasoned detectives noses. >> the odor of dekcomposition ws

very strong. >> it was days earlier. what's going on here, right? >> correct. that first inference from the 911 call and what charlie had said in the driveway to the deputies seemed to be in confrontation with what we were starting to see inside. >> down at the sheriff's office, jean tan, the mother, was released from custody, but not charlie. the 19-year-old ivy leaguer was charged with second degree murder. >> what did you think, anna? >> i was shocked. i was just so confused about, i didn't think it was real. i didn't think it was possible. >> charlie tan, the nice boy, the great kid, if convicted, was facing 25 years to life in prison. coming up, store video shows the gunna killed charlie's father being purchased. but it's not charlie buying it. >> new name all together here. >> correct. >> and then the strange thing charlie did just before his mom

placed the 911 call. >> the defendant sends an e-mail to his fraternity brothers called "showtime." >> when "dateline" extra continues. , i do. you guys are working on some pretty big stuff over there, right? like a new language for crazy-big, world-changing machines. well, not me specifically. i work on the industrial side. so i build the world-changing machines. i get it. you can't talk because it's super high-level. no, i tually do build the machines. blink if what you're doing involves encrypted data transfer. wait, what? wowwww... wow? what wow? there is no wow.

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hi, richard louie with the hour's top stories. a doctor says that hillary clinton was diagnosed with pneumonia on friday, this after the candidate had to leave a 9/11 memorial ceremony. she was unsteady on her feet and needed help getting into a van that took her to daughter chelsea's nearby apartment. she emerged a short time later looking well, and the doctor said she was dehydrated, perhaps due to the pneumonia, but for now otherwise fine. for now back to "dateline" extra. welcome back to "dateline" extra. i'm tamarin hall. charlie tan told police he shot his father to save his mother. but investigators were finding

flaws in that story. the ivy league student had been arrested and was facing second degree murder charges. was this an intentional killing or justifiable homicide? here again is dennis murphy with "house of secrets." >> anna valentine was in a state of disbelief when she learned that her close friend charlie tan had been arrested. >> did you have a chance to talk to charlie himself in that period? >> he called me on the phone a couple times from jail. >> anna didn't sit around. she was going to do whatever she could to defend her friend, because she knew there was no way charlie did anything wrong. >> you did something remarkable. you sort of pulled together a whole community behind charlie. >> anna started a defense fund support page for charlie. >> and it just like spread crazy. i had no clue what was going to happen. >> you threw out there on the net. >> i put out the page and told my friends i did it. people i hadn't even heard of were supporting him. people from the community, everyone was doing it.

>> how much money did you raise? >> around $50,000, yeah. >> why did people come out of the wood work to support charlie? >> he has been one of the nicest guys ever, and everybody knew that and they wanted to do anything they could to give back to him. charlie would give everything to other people. if somebody needed anything he would be the one to give it to them. >> reporter john hand was working on one of the biggest stories they had seen in years. great ivy league kid blows away his father in this nice neighborhood. what's going on? >> we were astonished. it's not very often you have a murder suspect who a bunch of people from pittsford are rallying around. >> the case had captured the hearts and mind of a community that couldn't imagine this exceptional young man in prison. these are lawyers and surgeons and big powerful people in new york state who are behind this state. >> oh, yeah. >> we wish that hadn't happened

but the kid deserves a break. >> the community felt that very strongly. >> so, when the trial began less than a year after the shooting, the sworn representative of the people with a murder case to prove found herself in an odd spot. >> the biggest problem was the defendant himself, because he did appear to be, you know, an upstanding, nice young man. >> monroe county district attorney sandra dorly. >> from the very beginning, people were disappointed that an indictment was filed against charlie tan and we're taking this to court. but, you know what? we have to prosecute people who violate the laws of our state. >> he told the jury that yes, charlie tan was a high achiever, a bright young man who always went the extra mile for his friends. >> and perhaps he wanted to succeed as charlie tan and solve all the problems that were occurring on coachside lane. >> helping his mother. >> helping his mother.

>> by killing his father. that was the solution. >> that was our theory, yes. the gun was found at the murder scene. his fingerprints are on the ammo, his mother, mother saying my son did it. and charlie saying he had to do it. >> but, did he have to do it? that was the key question. and the prosecution said no. this was no justifiable homicide. this was an execution. in fact, the weapon, a .12 gauge was purchased just for the murder. it had just been bought from a walmart near cornell. >> so we sent investigators down there, and as they began to look into that, they found that the gun had been purchased by a young man named whitney knickerbocker. >> newly purchased. >> newly purchased. >> which a new name all together here. >> right. >> it had taken place february 2015, the same day charlie left

cornell. the store had surveillance video of charlie's friend and fellow fraternity brother buying the shotgun, video that was shown to the jury. the frat brother was never accused of having anything to do with the killing. charlie had apparently convinced him to help buy a gun. >> friends say that whitney was told by charlie that he was going to go on a hunting trip so he asked whitney to help him. >> there was no hunting trip, charlie was planning a murder. in fact, before he got the friend to buy the weapon, surveillance footage showed just how intent he was on getting one. hours earlier, there's charlie. >> charlie's on video going into the walmart, attempting to purchase the shotgun. he is unable to. >> why can't he buy one? >> he's a canadian citizen. >> which would require a waiting period, time he didn't have. >> so he gets the friend to come in and make the purchase.

>> that was our theory, yes. >> it's hard to put together a heat of passion scenario, mom's in jeopardy, if you purchase the weapon in advance. >> correct. >> and the prosecutor told the jury there was no evidence of a fight that evening. >> if you look at the exact moment of the killing, jim tan is just sitting at his desk. >> sitting at his desk answering e-mails. >> answering e-mails, working to, you know, provide a living and a pretty good living for his family. >> in fact, the medical examiner testified that as jim tan salt behind his desk in his home office, he was shot three times about the chest and face. the last shot the coup de grace. it was the same night one of charlie's friends sent a deputy to the tan home to check on charlie's welfare. it's possible that when the boy

answered the door his dad was already dead inside. but no one from the tan home called 911, rather, charlie and his mom grabbed their passports and fled the country. >> jean tan and charlie tan left the country, went to canada and came back on that monday before the 911 call was placed. >> so why come back and tell a lie? the prosecution didn't know. a guess, perhaps someone had to run jim tan's business. and this last tidbit, before that four days late 911 call, charlie sends an e-mail to his fraternity brothers. >> he sends an e-mail called "showtime". >> you're going to be hearing from law enforcement. >> yes, yes, you will be surprised. showtime. >> they don't buy the self-defense. this was no crime of passion. it was a planned murder. so this is an assassination.

>> yes. >> he walks in and blows dad away. >> exactly. >> the prosecution rested. the defense team was up next, and they were about to lay out a head-spinning theory of the crime from seemingly another uvs no one saw coming. coming up, the defense drops a bombshell. >> one of the things that was always a question of ours was, was charlie covering up for someone else? >> and then the prosecution's stunning reaction. >> he picked up the shotgun and moved quickly across the room. >> when "dateline" extra continues. ♪ [cheering] ♪ the highly advanced audi a4. ♪

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remember here at ally, nothing stops us from doing right by our customers. who's with me? i'm in. i'm in. i'm in. i'm in. ♪ ♪ one, two, - wait, wait. wait - where's tina? doing the hand thing? yep! we are all in for our customers. ally. do it right. welcome back to date line extra, i'm tamarin hall. there was video of charlie tan's friend buying a weapon days before jim tan was found dead.

does this prove charlie was a calculated killer? dennis murphy picks up the story "house of secrets." >> it was an upside down world in this courthouse, where you'd routinely expect lots of supporters for the victim, there was none. >> the district attorney's office, i sat with her the whole time. >> there was some thought that the victim deserved what was coming to him. >> people who wouldn't ordinarily advocate homicide, would said if he did it he did it. his father deserved it. >> his friends surrounded him protectively. he had everything but pompons. >> it made him feel so much stronger, he knew we were all there for him no matter what.

>> his friend anna was on the witness list, so she wasn't allowed to sit inside the courtroom until the end. >> i went as much as i could between classes. >> how was he putting up with it? >> some days were harder than others. some days he seemed good. >> charlie would sit in court while they would build a case. playing the tape of jean tan weeks before the shooting. >> my husband just beat me up. i need your protections. >> are you injured? >> yes, he choke me, and i'm so scared. >> defense attorney james nobles thought the 911 recording spoke volumes about that household. >> it was almost as if we were put in the hell that charlie lived in for a brief moment. and the hell that jean lived in for a brief moment. >> and they kept piling on. jim tan continued the defense wasn't just a bully at home. his employees testified about the abuse they, too, encountered

in the work place. >> every other person who worked with jim tan said he was miserable, behaved like a child, he would bully people, was nasty at work. >> so a son defending his abused mother was a defense no-brainer strategy that seemed to require little assembly. the other defense lawyer, brian dekar lowes. >> some hybrid of a battered child syndromesyndrome. >> but that wasn't the attack his defense team planned. >> our strategy was to keep our strategic defense in our back pocket, hidden from the prosecution as long as we possibly could. >> so what was the secret defense? he were going to agree with the prosecution on one point, that when jean called 911 to report her husband dead, the murder was days old. >> that call is 100% fake,

there's no question about it. >> not only was the mom lying to 911 about when the murder occurred. no, argued the defense, she was lying about something much bigger, who the true killer was. the defense attorney saved his surprise for a closing argument. >> it was an unusual moment, because certainly, i knew there were many friends and supporters of jean tan in the courtroom, and i was going to basically suggest to these jurors that she had pulled the trigger. >> jean tan, the mom, the wife, the true killer. the defense said the shotgun was in her hand. she pulled the trigger. she solved her own problem, not her son. that was the story the defense saved for the 11th hour. >> not an easy thing to do in a packed courtroom. >> according to the defense, it was jean tan who had the motive, the motive to get rid of her bully husband, get the house, the business, the money. >> it put motive in jean tan's category more so than charlie.

>> and what little forensic evidence was at the scene was according to the defense inconclusive. >> there was a fingerprint on one of the shell casings and the box of ammunition. at one point in time, charlie could have loaded the gun but it doesn't make him pulling the trigger. >> the mom did it theory explains that odd e-mail that charl charlie sent his frat brothers, it implied that the story to come might monot be the real on. >> the real truth will come out one day and you'll knee what happ -- know what happened. one of the concerns was charlie covering for someone else. >> the prosecutor seemed caught off guard. >> he addressed charlie directly. he said your lawyer is calling your mother a killer, and he approached the jury very closely, and he was trying to

make a point, a very passionate point. >> brandish being ting the murdn as a problem did not sit well with the judge. >> we knew what he had done exactly what we wanted to do. we had totally taken him by surprise. >> after a week of testimony, the case went to the jury. out in the hallway, fv ctv came dogged charlie's every move. >> he knows his life is hanging in the balance. that's a tough thing for anybody to go through. >> but he had the unwavering support of team charlie. they all waited with charlie at deliberations began and spilled over into a second day and then another. >> every day we'd show up to court being, like, oh, is it going to happen today. everybody was super nervous. and charlie was, i was. >> because if if goes in an adverse way for you and charlie,

he's going to shabe led off onwouldn't see hoand you wouldn't see him for a long final. >> i'm not sure anybody felt bad for jim tan, but everybody did recognize that the way he died was still a crime. >> both the prosecution and defense had agreed that charlie's fingerprints were on the ammo. >> but did he actually pull the trigger? or did he load the gun and give it to his mom and say here you go. that was the biggest point of contention. >> she was ready to vote guilty. >> eight people guilty. four people not guilty. >> a stalemate, an impasse seemed to be at hand. but still me tathey talked. >> three of the jurors were crying really hard, because they didn't want to think that he was guilty, but they couldn't ignore it at that point. >> the local media asked prosecutor bill gardner for

updates. >> i don't. >> on day eight, after 50 hours of deliberations, the jury told the judge they were hopelessly deadlocked. the judge declared a mistrial. >> that didn't mean it was over for charlie. >> no, it just meant there was a long rad ahead. >> a long road with another trial, another set of court dates, another jury to go through the same set of facts, unless that wasn't what was going to happen at all. coming up. an entire courtroom gets the hock of hock of hock of a lifetime. >> as charlie tan awaits his fate. >> he was becoming unhinged. >> when "dateline" extra continues. mmmmm..... hmmmmm... [ "dreams" by beck ] hmmmmm...

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welcome back to "dateline" extra, i'm tamarin hall.

more than eight months after jim tan was shot to death inside his home, the trial for his son charlie was met with a hung jury. but there was another stunner in store. here with the conclusion of house of secrets. >> the charlie tan murder trial was big news in rochester. everyone was talking to the media. would you be presiding as judge again? >> i believe i would, because the case has been assigned to me. that's the normal protocol. >> the lawyers on both sides shared thought the about doing it all over again. >> it's a murder charge, not a petty larceny charge. we understand that the d.a.'s office is not going to walk away

from a homicide. >> how will it look differently? >> better for me. that's how it will look differently. >> unfortunately for charlie's attorneys, they'd already played their surprise defense, mom really did it. there would be no shock value in a second trial. >> frankly, we've got to face this like a brand-new case starting today. hung juries are a case in which you have to reinvent the wheel. >> in november of 2015, weeks after the trial ended, both sides were back in the same court, before the same judge, who two days earlier had won the state supreme court seat. >> we were figuring a january trial date. >> the reporter, john hand, who had been there for the entire trial was in attendance too. >> there were a number of charlie's friends there. myself and roughly four or five other reporters who had covered the trial. the gang's all here. and the judge said we have to address the motion for dismissal by the defense, it's still

pending. >> that's a common motion made by most defense attorneys when they ask a judge to throw out a case, especially due to a lack of evidence. >> it's frankly malpractice not to. >> everyone thought this would be an order of bisquusinessbusiy dispatched. >> then he talks about the lack of evidence, that the fingerprints were found on the shells upstairs, but that didn't indicate that he'd ever shot it. i looked at another reporter who i know and i said what's going on here? >> charlie's lawyers had a glimmer about where this was going. >> i leaned into charlie's ear, and i told him something good ate about to happen. >> the assembled press couldn't believe where the judge was heading. >> he's about to dismiss this case, the biggest case in years and years. >> the assistant prosecutor saw the train wreck ahead and wasn't

at all pleased. he grabbed the mic. >> can i speak? and the judge very quickly said no, you may not. bill guarderen continued to speak. and the judge said i'll put new handcuffs. never seen that before. and a court deputy walks up behind bill garderen, the prosecutor, not the defendant. >> the judge did finish his thought. he threw out the entire case against charlie tan. a judicial ruling that meant that the case couldn't be re-prosecuted or retried. >> it was a big win for charlie tan. he was ecstatic. >> outside the courtroom, the media was waiting for charlie, the former defendant who hadn't yet spoken to reporters. >> now you'll talk to us, right? >> and before we got a chance to talk to him, his defense lawyer ushered him out down the hallway. >> what did you think? >> i'm not sure i took it all in

at first. >> that this is over. >> it was super exciting. everyone was so happy. everyone was in tears. >> not quite everyone. assistant d.a. bill gargen was fuming. >> were you willing to get arrested over this. >> i was more than willing to have handcuffs placed on me to argue my point. i didn't cross any lines. >> what recourse do you have? >> there's no appeal. >> there is no appeal from this trial order of dismissal, because there has not been a verdict by the jury. >> the event didn't happen of. >> correct. >> so, in the people versus charlie tan, you had to cynically wonder whether the defendant's vocal supporters carried the day from outside the courtroom. >> some think the golden ivy league boy was able to kill his father and get away from it. strange story, the whole thing.

>> yeah. >> charlie's mother, according to the district attorney, will not be pros skulted. because there's no evidence to show she was responsible for the murder. >> she was a small woman. i don't know if she was capable of even being able to dischargena kind discharge that kind of weapon. >> so the only two people who know what happened in that house, charlie and his mother, have stayed mum. neither has spoken publicly about a case now closed but far from resolved. >> people will say this is a kid who killed his father and got off. and people will also say, no it isn't, they couldn't prove it. you've got two groups of people back there who said i don't care what happened. i'm never sending this 19-year-old cornell student to prison. >> the mother is running the company jim tan started. >> he's very positive. >> a great kid, a very popular kid who's done well and

succeeded in all things he's been in. and it's time to move on. we welcome him back with open arms. >> but that didn't happen. the university letwanted to ret were planning to punish him for conduct. his former coach thinks charlie will find a way to succeed. >> if he can get over the turmoil he came out of, i think he'll do fine. he's got everything going for him. >> in his young life, he'd pleased everybody. his coaches, teachers, devoted friends. outwardly happy. inwardly, who really knew? all one can say with any certainty are the known facts of a murky case. he got a friend to buy him a shotgun. said good-bye to the ivy league, and on a winter's day, drove home. >> that's all for this edition

of "dateline" extra, i'm tamarin hall, thanks for watching. i told myself, the worst part about dying is being afraid of dying. if i'm not afraid, it won't be so bad. i just couldn't believe this was the way it was going to happen. >> she was a college student found on a lonely road in texas. >> we figured she had been sexually assaulted and dumped here. >> tough questions for her boyfriend. >> where was i the night before? what had i been doing? when had i last seen her? >> i really thought ou