i hate you, brad cooper. i hate you, i hate you. >> she lived across the street. her party that friday at which brad and nancy fought openly, she said. >> her tone at that point was angry but also there was a tone of, you're an idiot. >> brad went home with the girls around 8:00. nancy stayed on. bitterly complaining about brad, even to strangers like donna lopez. and 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 was going to happen over there. it's really bad. >> 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 a.m. 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. >> but evidence o