Author Chris Waits was Ted Kaczynski's friend and neighbor in the Montana mountains for 25 years. ABC News called Waits the "Man who knew him best." That unique knowledge cast Waits as a key figure in the FBI's relentless investigation, a role that provided the author with volumes of Kaczynski's personal journals that illuminate--for the first time--the lifestyle, crimes and twisted logic of the notorious Unabomber.