The 'Master of Horror' Stephen King has been one of the most prolific writers in the horror genre. His books have sold more than 350 million copies worldwide, inspiring numerous film adaptations such as "The Shining", "Misery" and the upcoming "It: Chapter Two". For decades, King has managed to create some of the most iconic and haunting stories ever to come out of the genre. Which raises the question: How does he do it?