but there was no physical now missing router. they claim that he checked out a evidence linking brad to the generate a phone call. crime. not did he have the the prosecutor would say it was technological skill. they also took photographs of because he cleaned the house. the house. he covered his tracks well. >> but there it was. they searched the house. and they have not once what was the best evidence introduced any evidence that the against brad? router was in the house. ironic, perhaps, given the >> reporter: hard drives don't defendant's particular lie. or do they? expertise. >> we knew we had this that was the question the fabricated alibi we needed to defense raised when it came to those apparently damming results address. >> reporter: the issue was the of the fbi's search of brad's computer. phone call the morning nancy disappeared. >> you're talking about a brad's cell phone registered a computer that we know was call from home at 6:40 a.m. when tampered with. >> you're alleging what? he went back to the store. >> i'm not alleging. proof, surely, that nancy was alive at 6:40. i'm stating as fact the computer was tampered with. there were significant anomalies unless, that is, unless brad that we found in the computer placed the call himself. itself. brad, the world-class expert in >> reporter: meaning, he says, internet phone technology. that brad's computer was hacked. the 41 second google map search was planted. the prosecution had no smoking ultimately, he had the potential to make that phone call. gun. so you're saying he didn't even search for that map?

>> that's right. >> somebody else put it on his >> reporter: in testimony that computer? >> yes. was, frankly, mind numbing. >> an fbi agent had testified >> that leverage is something called either tappy or j tappy. >> reporter: an expert from that he saw no evidence of tampering, but the defense said, cisco, brad's former company, it had experts who did. explained about ten different ways someone as accomplished as brad could have remotely made two of them. that call. >> the main ways to do it are using a computer where you can program something into your computer and delay it so that a both of whom wrote reports. phone call can be made from your computer from the computer's but, trials have referees and in modem. this case, the judge ruled that >> reporter: to do that, brad needed a certain router. neither one of those defense one prosecutor said conveniently disappeared from the cooper home. >> we know he had this router. >> reporter: in fact, said the prosecution, this cisco chat log experts could testify about proves brad borrowed that tampering. one, said the judge, wasn't router, the 3825 it's called, sufficiently qualified, the other brought in too late in the trial. took it home, months before the murder. >> you know that defendant had one of those two 3825 routers? >> that's correct. i only had two. >> and you never got that 3825 router back? >> an fbi agent had testified that he saw no evidence of tampering, but the defense said, >> no, sir. it had experts who did. >> cisco doesn't have it back, where did it go? we know it was never returned. >> reporter: but it was brad's two of them. both of whom wrote reports.

own computer examined by the fbi but, trials have referees and in which coughed up the most this case, the judge ruled that neither one of those defense accusing evidence of all. experts could testify about tampering. evidence he had already lied under oath. one, said the judge, wasn't >> the kid fell asleep about sufficiently qualified, the other brought in too late in the trial. >> reporter: like the one in the neighborhood the night before. 9:00. so hanna would have heard party stories that saturday morning but, even if they had testified, there was one question they from her friend nancy cooper. would have. couldn't answer. because nancy didn't show up. >> i hadn't heard from her maybe by like 10:00, i called her i probably fell asleep soon house. after. if there was a hacker, who was brad answered and he said, she it? went for a run. >> reporter: in his deposition, >> reporter: nancy was an brad said she was asleep with >> i can tell you that police athlete, training for a half his daughters when nancy came had access to it. marathon. brad cooper was nancy's husband. >> i was like oh, okay. home from that party friday i can tell you that anybody when did she leave. he told me 6:30 or 7:00. within wireless range had access she's not back? >> reporter: weird. night. to it. but brad's computer said otherwise. >> what possible reason would if nancy had to cancel their the police have to put that map on his computer? he was on-line, until about midnight when nancy came home. meeting, surely she would have called. >> he's been awake on his computer and when she comes in >> i can't say that the police put it on the computer. hanna cooled her heels. shortly after midnight we think i don't know who manipulated the computer. what i can say is, that a >> at 1, the phone rang and i they argued and that a fight possible reason is if you saw on the caller i.d. ensued and that's when he believe somebody's guilty and that you don't have any evidence against them, well, it's perfect strangled her. evidence. it was her house. >> reporter: and then? i answered the phone, hey, where have you been. the closest thing the he said no, hanna, it's brad. prosecution had to a smoking nancy's still not back. gun. >> reporter: now brad was worried. >> i really started to panic. >> reporter: could those 41 a google map search. seconds put brad cooper in prison for the rest of his life? brad typed in the numbers 27518 >> reporter: especially when she the zip code for cary and zoomed learned nancy had also stood up in to the exact location where nancy's body was found. another of their friends. they called the local hospital. when did he do this? 1:15 in the afternoon on friday,

july 11th. the day before nancy went missing. ♪ no sign of nancy. >> this is the most pointed piece of premeditation, if you they called nancy's twin sister will. christa up in canada. >> reporter: but, proof of >> have you talked to nancy intent? stop dancing around the pain today? maybe. that keeps you up again, and again. maybe not. it wasn't much of a search. advil pm silences pain, she went for a run and she it lasted just 41 seconds. >> he didn't look anywhere else. and you sleep the whole night. hasn't returned yet and we're advil pm very worried about her. generally you search a whole bunch of different places and this is one place and it's only [ soft piano music playing ] can you call us back. 41 seconds long. mm, uh, what do you do for fun? >> you know about this kind of stuff? >> i don't think it would take -not this. very long if you look at the ♪ mapping, you immediately >> you would think. -oh, what am i into? recognize this desolate area, this beige area in a sea of mostly progressive's name your price tool. >> reporter: krista calls her green and then zoom into it, helps people find coverage options based on their budget. zoom into it, zoom into it and older brother jeff, who is a police officer in edmonton, see where it is. flo has it, i want it, it's a whole thing, alberta. >> reporter: of course, every and she's right there. prosecution has its flaws. and this one, maybe said the -yeah, she's my ride. >> my first reaction, okay, she's somewhere. this date's lame. she just needs some space or time. defense, they didn't have the he has pics of you on his phone. right man at all. -they're very tasteful. and maybe they didn't know nancy so well either. she'll turn up. >> reporter: when nancy's parents, gary and donna, heard she, too, the defense suggested, she was missing, they were gripped by something dark and cold. >> gary said to me, donna, this story is not going to have a on a daily basis. happy ending. >> reporter: by afternoon the cary police were involved. >> all i was told on the phone with the new it was a missing persons. >> reporter: when detective pronamel repair toothpaste george daniels arrived nancy's neighborhood was already filling up with a small army of her we can help actively repair panicked friends.

nancy's friends rushed to join enamel in its weakened state. in the search. it's innovative. her husband brad made a public my go-to toothpaste plea for help. is going to be pronamel repair. >> anyone that knows anything, i just want them to contact the police with any information they may have. again, thank you to everyone that continues to come out and help out. >> sir, do you have a flyer? >> reporter: volunteers chased up and down the running trails where she loved to train, she combed the surrounding parks and lakes and woods. this woman they had grown to love since she and brad moved down from canada. >> capacity to make her rather always group of friends feel they were best friends. but family can only tell you sot much... about your history. my go-to toothpaste i found some incredible records about samuel silberman... passenger manifests, census information, many ways they were. >> when she walked into a room, that's where people wanted to even wwi draft registration cards. be. the records exist... they're there, they're facts. >> reporter: she and brad were like a lot of people in cary, raising a family here, having that made it so real for me, got their start in another place and time. in brad and nancy's case, calgary, canada. it wasn't just a story anymore. bring your family history to life like never before. he has pics of you on his phone. get started for free at ancestry.com with this one little nexgard chew comes the confidence, you're doing what's right, to protect your dog from fleas and ticks that's where they met back for a full month. in '98. >> i really liked her. it's the #1 vet recommended protection. >> reporter: as did nancy's younger sister jill. >> it's someone who is warm, and it's safe for puppies. genuinely saw how much he cared for her. nexgard. what one little chew can do.

>> reporter: brad became a and my side super soft? be firm? helpful member of the family, even designed the computer with the sleep number 360 smart bed you can both... systems in the family business. >> our i.t. guy would say i want to meet the guy who did this, the networking system. adjust your comfort with your sleep number setting. so, can it help us fall asleep faster? he was kind of a legend in the i.t. world. >> reporter: he was so good, yes, by gently warming your feet. but can it help keep me asleep? that cisco systems invited him absolutely, it intelligently senses your movements and automatically adjusts to keep you both effortlessly comfortable. to move to raleigh and work for will it help me keep up with him? the company. yup. >> smart guy? so, you can really promise better sleep? >> smart guy. >> yes. not promise... prove. >> if nancy was to go with him and now, save up to $600 on select to america, for immigration reasons, they had to be married. sleep number 360 smart beds. plus no interest until january 2022 on all smart beds. so in the fall of 2000, they said their vows, an intimate family affair. only for a limited time. >> how did she feel about going stand up to chronic migraine with botox®. to north carolina. >> she was a little apprehensive. there was lots of tears at the airport, fear of the unknown, what if you had fewer headaches and migraines a month? but i think she was excited. >> reporter: a few years later botox® prevents there were two bmws in the driveway, nancy a vast circle of headaches and migraines friends and brad a bright future before they even start. of cisco where he would become botox® is for adults an expert in the marriage of internet technology and telephones. best of all, two little girls, with chronic migraine, bela born in 2004, katie two 15 or more headache days a month, years later. each lasting 4 hours or more. botox® injections take about 15 minutes in your doctor's office and are covered by most insurance. effects of botox® may spread hours to weeks after injection causing serious symptoms.

alert your doctor right away, as difficulty swallowing, speaking, breathing, eye problems, or muscle weakness can be >> the best mother i've ever seen. signs of a life- threatening condition. side effects may include allergic reactions, she played and played and played. neck and injection site pain, fatigue, and headache. she was so hands on. don't receive botox® if there's a skin infection. tell your doctor your medical history, >> reporter: and now, they were putting up missing posters. muscle or nerve conditions, and medications, sunday went by, all day monday, monday evening. someone called 911. including botulinum toxins, as these may increase the risk >> the chief of the cary police department it is my very sad duty to tell you that the search of serious side effects. for our nancy is over. with the botox® savings program, most people with commercial insurance pay nothing out of pocket. talk to your doctor and visit botoxchronicmigraine.com to enroll. for two long months attorneys for both sides hammered at the question, what happened to nancy cooper? the defense charged the police >> our investigation is now a more than dropped the ball. homicide. >> reporter: now they had to say good-bye. it was a measure of the woman their investigation was that total strangers joined nancy's family and friends, to dishonest. share in the sorrow. >> i continue to thank the the erasing of nancy's community for their generosity and support.

it's overwhelming. i am you one of the luckiest people in the world. i'm a twin. sorry. blackberry, for one thing, had i have a bond with nancy that no one in the world has. all i have to do to remember her is look in the mirror. to be intentional, said the defense. nonsense, applied the prosecution. besides, they claim, they already found what they needed from that phone through other sources. >> we had her phone records. we knew everything she had done. she will always be half of me, of nancy. dea the police might have inserted the google map search on brad's computer, they i love you and i always will. couldn't have, said detective daniels. >> none of the people that work >> reporter: now, of course, a for me or work in the department homicide investigation was under would have had the knowledge to go in and do something like way. that. >> reporter: the defense charged that police ignored those possible sightings of nancy and mysterious vans for months. the idea that they're in a >> the defense was thinking that bad marriage, that they're contemplating divorce, it gets jury wasn't listening. the police indicated that they but for detective george you to the point where you say, followed up with every one of i need to take a second look at those people. >> reporter: as for john daniels, only this to go on. this. >> reporter: this is howard pearson, whose indiscretion with she had been strangled. kurtz, defense attorney, and here's what he thought about the nancy should have made him a suspect, at least according to she was found wearing only a murder case against his client, the defense, he had an alibi. sports bra and her diamond stud brad cooper. on that friday night, pearson earrings. spent the night with heather. very same woman behind brad and there were no marks on her body >> you need actual evidence to nancy's breakup. convict and actual evidence is >> at the beginning of the to indicate a beating, no something that they did not case -- struggle, no sign of sexual have. >> reporter: still, as the long assault or robbery. >> reporter: no physical trial finally wound down, the it was a puzzle that landed in defense hammered home its claim his lap. evidence, said defense attorneys that the police and prosecution kurtz and robert trankle to tie bought into a whispering campaign when nancy's friends >> she wasn't raped. brad to nancy's murder. against brad. >> it made it easier for them to she wasn't assaulted in any kind the awful scenes from the cooper simply let the gossip about brad of way. became their reality, even when

the earrings weren't taken. marriage the jury heard no the facts and the evidence did witness from either side had seen brad physically violent not fit it. and now, the police department toward nancy. and the prosecutors are willing what was the reason for her to for the $300 a week allowance be over here? to send an innocent man to rot there was a reason, the defense in a done begun in essence for the rest of his life. and then what was the reason for >> reporter: but there were argued. them to do this if nothing was remember the couple had serious facts said the prosecution to done to her? debt. send brad cooper away. the defense offered contrasting scenes of the cooper marriage from another set of friends. he was going to place his wife's >> people who had known the body. fact, the router that could help couple for years, did not jump on this bandwagon to paint this him automate a phone call is now as an abusive relationship. missing. fact, nancy cooper never left >> reporter: remember that "i that house the morning of july 12th. ♪ hate brad" day, the day the >> reporter: so, the jurors adjourned to deliberate. prosecution said the marriage hit its boiling point. guilty of first-degree murder, on that very day, said laura second degree or not guilty? ♪ hiller, nancy was making plans for saturday night, the day she and nancy's family, having protect your pet disappeared. listened to weeks of confusing with the #1 name >> she wanted my husband and i circumstantial evidence, in flea and tick protection. to come over and play sequence worried. frontline plus. >> if i was hearing this for the trusted by vets for nearly 20 years. with her and brad. first time, would i feel >> was that a game you had comfortable sending someone to played with the coopers before and here we have another burst pipe in denmark. is this. prison for the rest of their >> nancy introduced us to that if you look close... life? jamie, are there any interesting photos from your trip? game. >> reporter: when nancy's friend >> reporter: the jury stayed out for two days and then -- ouch, okay. jessica testified they had plans >> has the jury reached a unanimous verdict? huh, boring, boring, >> yes, sir. you don't need to see that. to paint her house at 8:00 >> the verdict of the jury oh, here we go. saturday morning she had to be have been mistaken, said the reads, we the jury by unanimous can you believe my client steig had never heard verdict find the defendant, defense, because nancy knew brad bradley graham cooper, to be of a home and auto bundle or that renters could bundle? guilty of first-degree murder.

had a tennis game at 9:00 a.m. with mike hiller. >> i cried for hours. wait, you're a lawyer? only licensed in stockholm. >> i specifically sought out what is happening? nancy to make sure it was okay >> i cried for hours. jamie: anyway, game show, with her. relief, yes, it's over. kumite, >> did it indicate she had any there's a conclusion and it's cinderella story. other plans? justice for nancy. you know karate? no, alan, i practice muay thai, completely different skillset. >> there was talk she was going to jog and she would be back by then. >> reporter: there were people >> if i was hearing this for the who claim they saw a woman they first time, would i feel believed was nancy running and comfortable sending someone to prison for the rest of their it was proof, the defense says, life? >> reporter: the jury stayed out for two days and then -- that she was alive that morning. >> she was about 5'9", good >> has the jury reached a unanimous verdict? >> yes, sir. shape. >> reporter: this witness said >> the verdict of the jury she reported her sighting to the reads, we the jury by unanimous verdict find the defendant, police after she saw nancy's missing poster. bradley graham cooper, to be guilty of first-degree murder. >> how is it that the next day >> i cried for hours. when you saw the flyer, you believed it was her? >> i cried for hours. >> because she was so close to relief, yes, it's over. me and she had an elongated face. there's a conclusion and it's that's what drew my attention. justice for nancy. >> reporter: she wasn't the only now we can all go home. one. >> reporter: and brad? >> obviously brad was upset, but he knows and feels this is not this man said he got a 30-second over. look at her as he was driving to >> reporter: brad will appeal, work. based possibly on the judge's ruling excluding his expert >> i saw a lady jogging on the computer witnesses. right-hand side of the road. jogging towards the bridge. certainly these attorneys have >> but did the police follow up? strong views about the damage not for a long time, said these witnesses. that ruling may have caused. >> they ignored everybody that >> it was crippling. believed they saw nancy for >> reporter: nancy, there's a

three months. bench in a park, the place she >> reporter: those suspicious once ran, her adopted town's way vans, said the defense. of remembering. >> it was clear that the police the cooper girls, bela and had focused on brad to the katie, are growing up in canada exclusion of other people. with nancy's twin sister krista >> reporter: it wasn't just brad who had been unfaithful. and her husband jim. implied the defense. >> they're doing great. could someone else have wanted it's like every other normal to silence nancy permanently? little toddler and little kid. someone suggested the defense like john pearson who at first >> reporter: their cousins were didn't tell the police about an indiscretion with nancy. with them the day we came to he said he held back to protect call so seven of the little his family. it happened after a very tipsy halloween party back in 2005. girls scampered about, their pleasure infectious. >> she began taking her clothes office, i took my clothes off, and we, i believe, started to have sex. i believe we stopped and got the cooper girls, bela and dressed and decided to never speak about it again. katie, are growing up in canada with nancy's twin sister krista and her husband jim. >> it seemed to observers as if you two were somehow blaming the victim? you were looking for other >> they're doing great. people she may have had it's like every other normal little toddler and little kid. relationships with. why was that important? >> the reason that people looked to the spouse first, is because affairs of the heart frequently >> reporter: their cousins were with them the day we came to lead to crimes of passion. call so seven of the little so, anyone with whom she had a girls scampered about, their pleasure infectious. relationship, should be the subject of a police investigation. >> reporter: and there may have been other secrets, the defens

for the adults, bittersweet. >> it's sad nancy is not here seeing it. >> absolutely. that's the tough part for me. victim? >> what do they understand about you were looking for other people she may have had mother and father? relationships with. why was that important? >> the reason that people looked >> well, what we've told them is that mommy nancy was killed by a to the spouse first, is because bad man and that she's in affairs of the heart frequently lead to crimes of passion. heaven. and the man went to prison. so, anyone with whom she had a >> brad? relationship, should be the subject of a police investigation. >> reporter: and there may have she knows this may sound weird. been other secrets, the defense >> i told them he's traveling charged, clues to nancy's life because he worked so much, it's they'lr as big, a cary detectiv actually pretty easy and erased the contents of her plausible and that he's in a blackberry accidentally, said tent and has no phone. the prosecutors. >> you know they'll ask some nonsense, said the defense. day. >> it's not something that happens accidentally. >> reporter: a prime example, >> they will ask when they're the defense said, of shocking allegations that the police ready and us, as a family unit, investigation was dishonest. why would the police have any motivation whatsoever to get rid of evidence in this case? will sit down with them and it tell them what happened one day. >> not only did they start with >> reporter: tell them the tragic story of a man and a woman who sank in the undertone an eye towards building a case of what once was love. >> we got an outcome that nancy against brad, they also started deserves, but it's also not a >> reporter: police soon with an eye toward attempting to winning hand for anybody. and brad lost his life as well. there's many things that were preserve nancy's reputation. lost, lives that have been forever changed. >> that's all for now. and that phone would carry e-mails, text messages, for all of us at nbc news, thanks for joining us. we had a homicide. we had no suspects. pictures, videos. so we're dealing basically with a zero balance here. >> reporter: nancy cooper had >> you think it would have been been strangled, her barely clothed body found in a storm drain several miles from home. exculpatory evidence for your but why? there were no signs of rape or client? robbery or that any struggle had my dad on the phone told us

>> i don't know what it was. jenny was gone. occurred. because we never did get in that >> we start going back to where >> a house in flames. phone. the body of a woman inside. we started at, saying okay, let's look at everything again. >> reporter: and that call >> we have a body. i need a medic. >> reporter: there were reports from people who said they saw a saturday morly made himself wit woman who looked like nancy >> but it wasn't the fire that running that saturday morning. killed her. she was dead before it started. >> accidents will happen. this was no accident. >> who wanted her dead? her boyfriend said he knew. >> there's people after us. >> what does that mean? >> they're trying to get us. >> but police knew better. one man said he watched her for a good 30 seconds, then saw a van make a u-turn to follow her. there were other reports of mysterious vans. friday one sped away from a cul-de-sac with no lights on. could any of this be tied to her >> strangulation is a very killer? personal killing. that's a very angry killing. >> hello. >> we're not walking away from welcome to "dateline extra." anything at this point. everything becomes important. >> reporter: like the conversations with nancy's husband brad during the search. he told detectives he and nancy were up at 4:00 a.m. saturday to calm their crying 2-year-old katie and then 6:00 or so, he made two trips to the grocery store, after which nancy announced she was off to run. >> of course we went to find the video records of him going in and out of the store which we did, in fa

with brad struck detective daniels as odd. when he asked brad, did you contact nancy's family? >> he had told us no. but it could be because he's frantic about the situation and wouldn't have time to call them. >> reporter: a little more talking and the detective learned there may have been another reason altogether. nancy and brad were having marital problems. >> he told me the last two months they seemed like they were getting better. when i asked him why they had problems. he told me he had had an affair. >> reporter: so daniels tucked that tidbit away and went on for the search for nancy. but after her body was found, things were different. the cooper house became a crime scene. police in and out, turning the place upside down, and daniels kept his ears open. because among nancy's friends and family, people were certainly talking. >> we're getting all this information and we're having to separate what's important versus what's just part of a marriage. >> reporter: brad remember told detective daniels he and nancy were getting past the tension that his affair had caused. that wasn't quite the story he

was hearing from nancy's family and friends. >> she felt very trapped and she didn't know what she was going to do. >> reporter: the marriage, it turned out, had been rocky from the start. brad seemed more married to his job than nancy. then in the spring of 2007, nancy's close friend heather told her she slept with brad. nancy confronted her husband. >> she just wanted the truth so she could fix it and go on. >> he said it didn't happen? >> for a very long time. >> made her feel bad about thinking that it happened. >> reporter: until months later, new year's eve day when brad finally came clean. yes, he told nancy, it happened. but he said, only once. really it meant nothing. they went to counseling and that's when nancy heard what she said was the real story. >> brad says to the counselor, it's been going on for a long time. changes again from the one-night stand to i think i love the woman.

nancy came away from that and said i'm finished. >> reporter: they agreed to split, sell the house. nancy would move back to canada with the girls. and then suddenly, brad canceled nancy's credit cards. blocked her access to the bank account. put her on a cash allowance. >> i recall a time she was in the car with me and she called him and said, you know, i've got $2 and we don't have any diapers. >> reporter: nancy couldn't get a job. she had no green card. she began painting a friend's house to earn extra money. when she did, brad reduced her allowance. >> she must have been furious at him. >> furious would be an understatement. >> also tried to help nancy and she is very proud, she would feel guilty. i'm not going to take your money. this isn't your job to support me and my kids.

>> reporter: nancy began locking important papers including the girl's passports in her car. >> i went down in february '08 it was awful. i had never seen nancy stressed out before. i never seen her raise her voice in the house. she was just miserable. >> reporter: miserable. stressed. each day uncertain, a painful struggle, an angry contest. >> she said, this is just, i think, a game to show me how difficult it's going to be. it's his attempt to force me back into this relationship. >> reporter: then, as nancy was preparing to move back to canada and with brad's blessing to take the girls, one of those moments on which lives can turn, the arrival from nancy's lawyer of a proposed separation agreement. alimony, child support, private schools for the girls. brad would have to travel to canada for his twice monthly

visits. he made no counteroffer. just told nancy the move was off. >> he saw what he was going to have to pay and all bets are off. >> reporter: and then, brad got ahold of the girl's passports, found them in nancy's car. they couldn't leave. nancy was trapped too. >> but as the father, it's his perfect right to prevent those kids from leaving. >> yes. it's also a way to say, if i'm doing half the child care, then i'm not going to have an alimony issue. >> reporter: to get her away from her troubles, nancy's family took her and the girls on vacation. >> how was it at the end? >> heartbreaking. i had her in my arms at the airport in charlotte and she was sobbing and she said, mom, i just want to come home. and i'll never forget that day. >> reporter: it was the last time they saw her alive. and now that she was dead, nancy's family was sure brad had to be involved somehow. but detective daniels knew the demise of a marriage no matter how bitter it had been did not prove murder. there was more work to do. >> statistics say we should key on the husband and we're not going to walk away from that, but at the same time we're letting the investigation lead us wherever it goes. >> reporter: coming up -- brad cooper comes clean about his affair with nancy's best friend.

>> took place in her home, the residence of nancy and myself. in the closet of the master bedroom. >> reporter: when "dateline" continues. fragrance shouldn't either. air wick's new technology releases fragrance upwards and outwards unlike febreze. so now you can fill every corner with fragrance. upgrade to air wick. whoa. travis in it made it. it's amazing. oh is that travis's app? it's pretty cool, isn't it? there's two of them. they're multiplying. no, guys, its me. see, i'm real. i'm real! he thinks he's real. geico. over 75 years of savings and service.

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sleep number 360 smart beds. plus no interest until january 2022 on all smart beds. only for a limited time. in the days after nancy cooper's murder, the police chief here in cary, north carolina, tried to calm her jittery town, but her message was, well, curious. seemed to imply her officers knew something more than they were revealing. >> we still believe this is an isolated case. cary continues to be one of the

safest places to live in the nation. >> reporter: isolated? how could she know, really? >> we still have not named a suspect or a person of interest. >> reporter: oh, but nancy's family had. the very day christa learned her twin sister was missing she called brad. >> i asked him pointblank at that point, what have you done? where is she? >> she didn't wait for an answer. she just hung up the phone. then, the day after nancy's body was identified, her family went to court to try to get those two little girls away from brad. >> by 4:00 in the afternoon, we had papers in the judge's hand for temporary custody of nancy's children. >> reporter: the family acted so fast because according to their complaint, brad's behavior was so disturbing. before she disappeared, they had seen emotional abuse. and they were sure she never went jogging on july 12. then after she went missing? >> he was very stunned, aloof with the family and didn't contact anybody and he just

didn't want anybody around, didn't want any help. it was strange enough to be alarming. >> reporter: and so they fear for bela and katie's safety. >> did you think they were in danger too? >> if she was a place to do this, the answer to that was absolutely. >> are we sure that this happened? at the end of the day you have to live with the fact that if we're wrong, then this is way over the line. we did it for the right reason. as a family we decided, we're going to take that step over the line. >> reporter: there was an emergency hearing, and the judge determined that the intense scrutiny brad was likely to face

during a murder investigation put the children at risk. in late july the girls went back to canada to live with krista, their slain mother's twin and her husband. brad had not been charged with any crime. wasn't even a declared suspect and he fought hard to get his daughters back. >> afterwards, i thought about it. >> reporter: which meant three months after nancy's murder sitting for a videotaped deposition, in which brad answered questions under oath about his marriage, his affair and what happened the morning nancy disappeared. so, were police investigators listening? oh, yes, they were. >> was nancy a good wife? >> i would say so, yeah. she was supportive of myself and of the children. very loving and generous. >> reporter: but there were two issues. the trouble with cooper's marriage, one was money. the couple had serious debts. >> this past week i looked at the american express card from january 2007 to december 2007. of that, $27,000 was accredited to nancy's credit card. and mine was $17,000. of that, i think $3,000 or $4,000 was part of our monthly bills. >> reporter: it was to reign in nancy's spending, he said, he put her on a cash allowance. >> how much cash? >> at least $300. >> reporter: but nancy said brad was angry that they didn't have more money to spend. >> she referred to me as the

budget nazi. i'm sure she probably said that once or twice in a heated conversation. >> reporter: the other issue? brad's sexual reti called it hi >> i had sexual intercourse with heather once. >> reporter: it happened some time at the end of 2004, early 2005, he said. >> and where did this sexual intercourse take place? >> it took place in our home, in the closet of the master bedroom. >> did you initially deny the relationship? >> yes. i initially denied it for approximately one year. >> why? >> i thought that if by denying it, it would go away and we could remain as a whole family. >> reporter: but when it became time for the family to split, brad said he found the monthly terms of the proposed separation agreement unreasonable. >> child support, medical, private school, extra

activities, you know, kind of added it up and i ballparked it at over $5,000 to $6,000. >> reporter: he also explained why he called off nancy's move back to canada. >> i realized that seeing the girls every other weekend would not be sufficient. >> reporter: and brad gave his account of the hours before nancy went missing. they were at a party across the street friday night. he left about 8:00 p.m. got the girls ready for bed. >> the kids fell asleep about 9:00 p.m. i probably fell asleep soon after. >> reporter: he was awakened briefly about 12:30 when nancy came home. >> when she opened the front door and i heard her come up the stairs. >> reporter: he was awakened at 4:00 a.m. by katie's crying, took her downstairs followed by nancy. >> nancy and i tag teamed off and on, trying to keep her occupied, calm her down. >> reporter: he said he made two trips to the store that morning.

on the second trip nancy called him. >> do you know what time that would have been? >> i think looking at the cell phone records i think it said it came in at 6:40 a.m. >> reporter: when he came back from the store the second time, katie had calmed down, he said, and nancy told brad she was going for a run. >> i took katie upstairs, went in front of my computer, read some e-mails with katie in my lap. >> reporter: and then, around 7:00, he said, nancy left. >> how do you know that she left the home? >> i'm not too sure if she said good-bye. somehow i knew she left. the door closed or she said later or something. >> reporter: that, he said, was the last time he saw her. three weeks after this deposition, three months after nancy's body was found, in late october, brad cooper was arrested and charged with the murder of his wife. so, was it something he said? he was just the right sort bounce out wrinkles, bounce out static. due to afib not caused by a heart valve problem. of guy when she found him, bright, quiet, stable, this computer genius so skilled a national powerhouse had sought so if there's a better treatment than warfarin, national powerhouse had sought him out. shirt has fewer wrinkles, less static, i'll go for that.

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he was just the right sort of guy when she found him, bright, quiet, stable, this computer genius so skilled a national powerhouse had sought him out. now, brad cooper was on trial for murder. >> at this time we are ready to have the opening statements. >> reporter: it began this past march, 2 1/2 years after nancy's death.

>> nancy cooper never went for a run from her house on july 12th of 2008. >> reporter: the prosecutors howard, amy and boz, had their own idea of what happened to nancy the night she disappeared. >> we think she came home from this party and said some things in front of him that might have upset him a little bit and he choked her. >> reporter: killed her then, their theory goes, put her body in the trunk of his car, drove to that drainage ditch, returned home to manufacture an alibi. why? she started with the shredded marriage, brad's affair, cutting off nancy financially, stopping her move back to canada. she was, testified nancy's friends, increasingly desperate. >> she said he's breaking me. i don't know how much left i have to fight. >> she told me when she slept at night she slept with her jeans on and the keys in her pocket with the children and the door locked. >> reporter: he never beat her. it wasn't physical, said the prosecutors. but he used financial power to exert absolute control. this, they said, was a form of domestic violence. >> she was in this abrasive, rough relationship at that point. he trapped her. he controlled everything about

her life. >> reporter: wait a minute. nancy's allowance, remember, was $300 a week. would a jury think that was evidence of abuse? >> how do you tell a jury that he's depriving her. >> it's difficult. the facts still remain there are these signs of control emanating from that cooper household. >> it doesn't matter whether it's $1,000 a week or $10 a week. the fact of the matter is, is that it caused friction between the two of them. >> reporter: and so the jury heard about that last week of nancy's life, the week of war with brad. with nancy's father on the stand, prosecutors played a phone message nancy left her parents after she returned home from that vacation with her family. >> the house was so dirty. there were ants infesting on the table when i got there. >> as that last week went on, the fighting escalated. on friday, her friend testified,

nancy was shaking with anger when she revealed brad withheld her allowance that day because she earned her own money painting a house. >> did she tell you what kind of day this was? >> this was an "the hate brad" day. she said three times that day, i hate you brad cooper, i hate you, i hate you, i hate you. >> describe your demeanor for us if you would. >> she clenched her fists and spat the words out. >> reporter: diana lived across the street. it was her party that friday at which brad and nancy fought openly, she said. >> her tone was angry but also there was a tone of you're an idiot. >> reporter: brad went home with the girls answered 8:00. nancy stayed on, bitterly complaining about brad, to strangers like donna lopez. once in a while, said donna, nancy nervously looked across the street to her own house. >> how did you feel when you left that night? >> i was very worried for someone who i didn't know well. i thought i met someone really, really nice and told my husband, something really bad is going to happen over there.

it's really bad. >> reporter: so, when nancy disappeared, her friends' eyes all turned to brad. after all, they knew about the conflict and jessica adam knew nancy was supposed to be at her house at 8:00 that saturday to paint. when nancy didn't show up, she called the police. >> i was very concerned. i had seen brad in my house and he was agitated that week. related to the painting. nor was brad's conspicuous absence from her memorial