Evil Genius: The FBI agent who snares serial killer UNABOMBER reveals how he did it

Ted Kaczynski was a math genius who admitted to building bombs he planted or mailed to targets around the US that killed 3 people and wounded 23 between 1978 and 1995. Dubbed the UNABOMBER by the FBI -- and acronym for "Universities and Airlines Bomber, Kaczynski constructed his deadly devices in a primitive cabin in a remote area of Montana. Guests include retired FBI agent Jim Fitzgerald, who was key in the arrest and conviction of Kaczynski. Also forensic psychiatrist Dr. Carole Lieberman, and Crime Stories' co-host Alan Duke.