By the 1980s, Ted Kaczynski had set off several bombs, causing only minor injuries — but for him, it wasn’t enough. What had started as a plot for revenge grew into an unrelenting need to change the world. To do that, he needed to kill. The reign of the Unabomber had begun. This episode originally aired on Serial Killers in April 2021.  Learn more about your ad choices. Visit podcastchoices.com/adchoices