There is an interesting fine line between true-crime/thrillers and horror. At the core of true crime is horror; the idea that someone can stalk you, hunt you, kill you, and in many cases make you disappear is utterly terrifying. Our fascination with those stories, and the people that peretrate them is because we wonder what it takes to make someone into that sort of monster. These tales allow us to also face the idea that the world isn't as safe we as often hope it is in a way that still feels like we are in control.
The Spooky World of Chris Ringler 