and this is dateline. this doesn t happen in our happy little world. their world shattered, a young mother strangled. we had a homicide and no lso no evidence. but police found a dark side behind that bright suburban facade. she slept with the children and the door locked. and finally a vital clue. what happened to nancy the day she disappeared? welcome to dateline. a young mother disappeared one her husband said she went for a run and never came home. the puzzling case happened in a safe, suburban neighborhood where crime is unexpected. but sometimes there are secrets hidden behind closed. nothing about that morning made any sense. it seems like such a bad nightmare. this doesn t happen our happy little world. it was a saturday morning in july 2008. the happy total world of sweet and leafy suburb of raleigh north carolina, called carry. the sort of place a young family would aspire to. if you are someone like hannah pritchard, for example. there s always l
also no evidence. but police found a dark side behind that bright suburban facade. she slept with the children and the door locked. and finally a vital clue. what happened to nancy the day she disappeared? welcome to dateline. a young mother disappeared one her husband said she went for a run and never came home. the puzzling case happened in a safe, suburban neighborhood where crime is unexpected. but sometimes there are secrets hidden behind closed. it all seemed like such a bad . it. . at reporter: it was a saturday morning in july. the happy little world suburb of raleigh, north carolina, called cary, a place where a young family would aspire to if you were someone like hanna pritchard, for example. there s always lots of friend making going on through someone you meet. lots of cookouts and family functions. reporter: like the one in the neighborhood the night before. so hanna would have heard party stories that saturday morning from her friend nancy co
evidence against brad? ironic, perhaps, given the defendant s particular expertise. we knew we had this fabricated alibi we needed to address. reporter: the issue was the phone call the morning nancy disappeared, brad s cell phone registered a call from home at 6:40 a.m. when he went back to the store. proof, surely, that nancy was alive at 6:40, unless, that is, unless brad placed the call himself. brad, the world-class expert in internet phone technology. if anyone could do that, it was the defendant. ultimately, he had the potential to make that phone call. in testimony that was, frankly, mind numbing. that leverage is something called either tappy or j tappy. reporter: an expert from cisco, brad s former company, explained about ten different ways someone as accomplished as brad could have remotely made that call. the main ways to do it are
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 wh
unless, that is, unless brad placed the call himself. brad, the world class expert in internet phone technology. if anyone could do that it was the defendant. ultimately, he had the potential to make that phone call. in testimony that was frankly mind numbing that leverages something called either tapi or jtapi. an expert from cisco explained about ten different ways someone as accomplished as brad could have remotely made that call. the main ways are using a computer where you can program something into your computer and delay it so that a phone call can be made from your computer, from the computer s modem. but to do that, brad needed a certain router. conveniently, it disappeared from the cooper home. we knew he had this router. in fact said the prosecution, this cisco chat log proves brad ordered that router, the 3825,