i mean, not with nancy pfister home. kathy knew that when nancy rented her house, she kept her personal belongings locked in a closet in the master bedroom. but she and kathy had unlocked it when she got home. at that point, i was not feeling comfortable. something was not right. keith morrison: kathy, who often house sat for nancy, had a spare key, but it was back in her house. so she went home, got the key, returned, opened the closet door. when i opened that door, that odor is so overwhelming. it hit me in the face. and i looked down, and i could see the shape. keith morrison: a shape hidden under a pile of blankets and coverings. but with one glimpse, kathy just knew, she said. it was nancy pfister. hard to get that image out of your mind? it is. it's kind of stuck there? it is. keith morrison: kathy fled the house, got in her car, called 911. kathy carpenter (on phone): oh my god. no. it's pretty desolate up there. so i jumped in the car, and i thought, i'll just drive down the hill and get to the police department.

keith morrison: some members of which will be telling stories about nancy pfister for a very long time. man: nancy lived a fantastic life. and i think we all need a little more dreaming like that, you know? a little more-- keith morrison: more nancy. man: --little more nancy, yeah. hello, i'm andrea canning, and this is "dateline." [music playing] hello, i'm andrea canning, and this is "dateline."r, and i prayed to god. i said, you know, i don't want to live. andrea canning (voiceover): it was a crime that engulfed a city. a young tourist murdered. reporter: he was stabbed trying to protect his mother. you had to get every one of them. andrea canning (voiceover): seven teens convicted. one says he's innocent. you don't have to believe me. look at the facts in this case. andrea canning (voiceover): now we're doing just that, tracking down witnesses. he was shaking. he started crying. andrea canning (voiceover): revisiting evidence. the most emotional day was reading the letter. andrea canning (voiceover): is he telling the truth or lying to win his freedom? you made that up, didn't you?