Robert Graysmith, the man who solved the infamous Zodiac murders, now delivers the complete bone-chilling story of the Unabomber, not only plunging into the complex mind of the bomber, but detailing the longest, most intense, and costliest manhunt in national history. In this true life psychological mystery, Graysmith explores the many roles played by the Unabomber. Introverted math professor; enigmatic hermit; and deadly bomber, who made each explosion more terrifying than the last. Graysmith, one of the nation's foremost experts on serial killers, knows this man as no one else does. Not even the FBI has gone as deep into the Unabomber case as Graysmith. Using exclusive interviews with the bomber's neighbors and his victims, and retracing the Unabomber's steps, Graysmith uncovers the government's deadly mistakes that prolonged the terror and unveils a brilliant but tormented mind that wrought unspeakable violence.