"[The first time Kaczynski's sister-in-law thought he might be the unabomber] I'd thought about the families that were bombed. There was one in which the package arrived to the man's home and his little 2-year-old daughter was there. She was almost in the room when he opened the package. Luckily she left, and his wife left. [...] And then he died. And there were others. And so I spent those days thinking about those people."