John Wayne Gacy was, according to medical experts, a psychopath. But this simple diagnosis doesn’t even come close to explaining why this son of a First World War veteran turned out to be one of the most notorious – and creepiest – serial killers in U.S. history.
And that’s saying something, for there has certainly been no shortage of notorious and creepy serial killers throughout the years. For instance, Ted Bundy, the Green River Killer and the Zodiac Killer have all have gone down in infamy. But few chill the bones quite like Gacy, “The Killer Clown.”