Ted Kaczynski is flanked by federal agents as he is led from the federal courthouse in Helena, Mont., on April 4, 1996. Kaczynski is now serving a life sentence in prison for the bombings.
John Youngbear/Associated Press
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James R. Fitzgerald says Ted Kaczynski's writings helped crack the case that confounded the FBI for more than 17 years. Manhunt: Unabomber, a TV series on the Discovery Channel, retells the story.
Ted Kaczynski is flanked by federal agents as he is led from the federal courthouse in Helena, Mont., on April 4, 1996. Kaczynski is now serving a life sentence in prison for the bombings.
John Youngbear/Associated Press
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