Part Three recounts the period from 1993 to 1996, when the Unabomber was holding America ransom with a series of increasingly powerful bombs before his arrest in 1996. Kaczynski's brother and sister-in-law reveal the emotional story of how they came to suspect he was the Unabomber, which ultimately led to his arrest.

• Mick Grogan

• Ted Kaczynski
• Roy Wright
• Joel Moss