show more of you. >>> before being arrested for the murder of two of her sons, darlie routier was a 26-year-old mother to three boys. darlie was known as a doting mother who baked cookies for her boys and their neighborhood friends. >> it is terrible to think a mother would do something like that, but it is good to know that they caught the murderer. >> darlie's arrest came less than two years after susan smith claimed an assailant had taken her two boys before smith herself confessed to driving them into a lake in south carolina. >> as with susan smith, there were two young boys involved, pretty quickly darlie was called dallas' susan smith. >> she is not a susan smith and we're going to prove this. >> concerned that darlie might be released on bail, child protective services came to take her son drake away from darlie's mother. >> i said, you're not taking drake. we haven't done anything wrong. and she said, well, you think darlie's innocent. so we can't be sure you'll protect him. and i said, my daughter is innocent until proven guilty or has it changed now? >> drake was temporarily

people to this day who are astounded that that trial record did not result in a new trial for darlie routiernow faced the uphill battle of appeal the. but as cooper dug through evidence he came across a second videotape which never was shown to the jury. >> it was a major factor in her conviction from the jurors' own mouths. but what was not shown to the jury was this two-hour memorial video that took place before the silly string incident. >> the second video was secretly filmed by police, attempting to capture any guilty comments made at the boys' memorial. >> the preacher was there, family was there. prayers, crying. emotion you would expect, all appropriate behavior. >> i have silly string. >> her sister brought the silly string. it wasn't darlie's idea. >> this was my son's birthday, devon's birthday, and my sister and her boyfriend went and got silly string. he loved silly string. we did for them what devon didn't get to have and what we knew that he would want and enjoy. they took that, and they twisted it and they turned something that was supposed to be beautiful and tried to make i

>> darren routier was upstairs, asleep with their infant. and he said he heard darlie yell for him, he heard a glass break and that's when he came downstairs to find a bloodbath. >> coming downstairs, running straight over to devin and there was blood all over. >> 6-year-old devin routier had two devastating wounds to his chest. they went completely through his body. he was impaled by a large knife. >> darren tried to perform cpr. >> i blew into his mouth the first thing that happened was air came out of his chest and blood just sprayed all over me. >> oh, my god. hold on. hold on. >> ma'am, is there anybody in the house? besides you and your children? >> my husband just came downstairs and he's helping me. oh, my god. >> darlie routier had also been injured with stab wounds to her neck and arms. >> there is blood everywhere, and darlie is bleeding and she's telling darren that some men came in here and did this. >> i saw them. they came in here. >> listen, ma'am, you need to let the officers in the front door, okay? >> the first two officers who arrived, i think, esse

people to this day who are astounded that that trial record did not result in a new trial for darlie routiere now faced the uphill battle of appeal the. but as cooper dug through evidence he came across a second videotape which never was shown to the jury. >> it was a major factor in her conviction from the jurors' own mouths. but what was not shown to the jury was this two-hour memorial video that took place before the silly string incident. >> the second video was secretly filmed by police, attempting to capture any guilty comments made at the boys' memorial. >> the preacher was there, family was there. prayers, crying. emotion you would expect, all appropriate behavior. >> i have silly string. >> her sister brought the silly string. it wasn't darlie's idea. >> this was my son's birthday, devon's birthday, and my sister and her boyfriend went and got silly string. he loved silly string. we did for them what devon didn't get to have and what we knew that he would want and enjoy. they took that, and they twisted it and they turned something that was supposed to be beautiful and tried to make