The FBI Files - Season 1 - Eps 9: The Unabomber
He was a recluse who spread terror through the mail for 18 years. Two men died and more than a dozen were injured , but Ted Kaczynski wasn't known as the Unabomber until his brother tipped off the FBI. Kaczynski's Manifesto, published in major newspapers, set off a flurry of activity for the FBI: writing analysis and comparisons, DNA gleaned from a single postage stamp and finally, Kaczynski's arrest at his tiny cabin. The agents collected enough evidence, including the Manifesto itself, to convict Kaczynski. He is serving four life sentences plus 30 years with no chance of parole.
About The FBI Files

Title: The FBI Files
First Air Date: 1998-10-20
Last Air Date: 2006-03-24
Status: Ended
Rating: 7.4/10 (from 10 votes)
Language: EN
Seasons: 8
Total Episodes: 121
Network: Discovery
Genres: Documentary, Crime, Reality
Production Companies: Unknown
Synopsis
Witness the crime busting techniques and forensic science used by the FBI to break the most baffling cases. From crime scene analysis to the most up-to-date laboratories, FBI agents relentlessly comb through mountains of evidence to narrow their search, ultimately prevailing over the perpetrators and bringing them to justice.