In 1978 Ted Kaczynski began what would become a series of bombings around the United States over the next two decades. Kaczynski, who was then an unknown serial bomber, wanted to rid the country of modern technology which he believed was destroying human minds and society. By 1996, the Unabomber had killed three and injured twenty nine others with his carefully crafted homemade bombs. The investigation into the Unabomber was the most expensive investigation in the history of the FBI with an estimated to cost around 50 million dollars.