Known as the King of the horror genre, author Stephen King has shared his number one scary movie of all time that left him in "helpless terror" when he first saw it, but surprisingly, it's not a film he penned himself. Although Stephen King needs little introduction, as many horror fans will already know a lot about the legendary author, The Shining writer didn't always indulge in the spookier side of life, with many other genres explored, which included suspense, crime, science-fiction, fantasy and mystery, too.