The Unabomber: The man that the world would eventually know as Theodore Kaczynski

How do you catch a twisted genius who aspires to be the perfect, anonymous killer—who builds untraceable bombs and delivers them to random targets, who leaves false clues to throw off authorities, who lives like a recluse in the mountains of Montana and tells no one of his secret crimes?

That was the challenge facing the FBI and its investigative partners, who spent nearly two decades hunting down this ultimate lone wolf bomber.