he didn't actually kill nancy pfister, he wrote. he was falling on his sword for love. ith morrison: three days later, june 20, dr. trey styler formally pleaded guilty to second degree murder and was sentenced to 20 years in prison. that same day, the da dropped charges against kathy carpenter and she walked out of jail a free woman. i was very grateful, very thankful. and i felt god answered my prayers. but at the same time, it was still scary. i'm leaving jail after being locked up. what will people think? how will i be judged? keith morrison: she is grateful, scared, also sad. but there was sorrow for still thinking of the loss of nancy and that he did something like this, that he did it. that was still hurtful. keith morrison: but nancy styler added a bitter anger to her whirlwind of grief and relief. if trey was innocent, as he told his wife he was, then had the real killer just walked free? nancy styler: i had kathy carpenter pegged in my own little courtroom. and every little piece of evidence that was given to me corroborated that. keith morrison: and then, it wa

keith morrison: some members of which will be telling stories about nancy pfister for a very long time. billy clayton: nancy lived a fantastic life. and i think we all need a little more dreaming like that, a little more-- keith morrison: little more nancy in us. billy clayton: little more nancy in us, yeah. [music playing] >> i'm scared, it's going to say. >> when people have power and money, you get afraid. >> startling developments and a headline making mystery. >> you see the blood spatter, very compelling. >> the disappearance of jennifer dulos. >> what do you think happened in that garage? >> a serious, violent assault occurred my garage. >> finger-pointing started immediately. >> is your husband involved? >> i have not been there. >> have you had anything to do with jennifer's disappearance? >> i have. not >> investigators speak out. >> this is a new element. >> our theories are the zip ties were used to incapacitate jennifer. >> this is an effort to leave no stone unturned. >> someone has information, someone knows something. we are going to find her. >> hello, and welcome to d