Starting out as an apparent terrorist bombing, the Unabomber case became the longest (nearly 18 years), largest, and most expensive manhunt in American history. Between 1978 and 1996, the Unabomber attracted worldwide attention, becoming the subject of radio talk shows, television documentaries, and hundreds of newspaper articles. A $1 million reward was offered for information leading to the arrest of the elusive killer. Code-named “UNABOMBER” because of the universities and airlines he targeted in his earlier bombings, the elusive offender rose from relatively obscure criminal status to national recognition. In all, the Unabomber killed three persons (two in California and one in New Jersey) and injured 23 others, his attacks spanning nine states. Several victims were university professors or people directly related to technology.

By 1996, ...