Gary Greenberg was a Unabomber groupie. He was in constant contact by phone and mail with Ted Kaczynski. one of the FBI's Most Wanted, before his arrest on multiple explosives and firearms charges. Greenberg approached this extremely paranoid individual, gamed his trust and offered to write a biography. But, as there is a competition amongst the groupies of any celebrity, Greenberg had entered a dangerous world of rage, jealousy and nefarious conspiracy.