josh mankiewicz (voiceover): amy salvaggio remembers well the night her duplex apartment in stow, ohiofor the 24-year-old intensive care nurse. i was at my boyfriend's. i got a call in the middle of the night from a neighbor saying that the house was on fire. we were only about two minutes away. so i drove over very fast. josh mankiewicz (voiceover): amy says she jumped out and ran toward the firefighters who were working her half of the duplex, where the worst damage was. the first thing that they asked me was, who would want to kill you? who would want to murder you? and i just kind of looked at them, like what? what are you talking about? and then they asked me, don't you smell all the gasoline? and that's when i stopped, and i realized that that's all you could smell, was this strong odor of gasoline. you involved in anything illegal? no. josh mankiewicz: anything extramarital? no, mm-mm. anything that's going to make somebody angry enough to make you make them want to do away with you? nothing that i could think of at all. josh mankiewicz (voiceover): investigators heard the same