A dramatized, in-depth look at how FBI profiler Jim Fitzgerald pioneered the use of forensic linguistics to help track down Ted Kaczynski, the man who came to be known as the "Unabomber." Agent Fitzgerald faced an uphill battle against both Kaczynski and the bureaucracy of the UNABOM task force in the course of his efforts to identify, capture, and convict Kaczynski of his serial bombings.