In 1970s Chicago, teenage boys are going missing by the dozen. But investigators are overlooking an important clue – all the missing boys share a connection with an upstanding community member who's leading a double-life. He's a power hungry sadist...that can't get enough. You might think this is the plot from a horror film, but it's all terrifyingly true. This is the original clown-faced killer – the monster that inspired so many evil, clown-faced villains. This is the Behind the Screams account of serial killer John Wayne Gacy.