origin of the fire showed a possible motive. >> it appears that the fire had been lit between renee powell's legs. >> although there were no signs of forced entry, renee's purse and credit cards were missing. and all her electronic equipment was missing, like her tv and vcr. >> she had recently been doing laundry because there was laundry stacked on a sofa. you could tell she had recently put together a pitcher of iced tea because there was a pitcher full of iced tea on the counter. and you could see where the ice cubes had melted from the heat of the fire. >> i picked up the phone and my sister's voice was very unusual. she said she's gone. she's dead. i said who's dead? she said renee. i said renee who? she said renee is. i said she can't be dead. i just talked to her. >> at the autopsy, the medical examiner found evidence that renee had been sexually assaulted. >> we just couldn't come up with that person that would be wanting renee dead. never was able to find any person, no family, no relatives, no past lovers, no -- no one at work. >> then a month after renee's murder, there was anothe

renee powell, a nurse that visited seattle on vacation, and never ft