The entertainment industry, with its long-established allergy to new ideas, often mines the bestseller list for source material. Studios are more likely greenlight a scary story after it has been officially vetted by the reading public, and less likely to interfere with a proven earner. In horror cinema, however, the filmmaker’s vision of a story so often becomes definitive in the minds of viewers that it overshadows the books that inspired that vision in the first place. With that in mind, the Westword Book Club has compiled a list of 6 cult classic horror that were inspired by novels and short stories, deliberately avoiding canonical works like Dracula and Frankenstein as well as blockbusters like The Exorcist and Rosemary’s Baby in favor of slightly obscure titles that deserve more eyeballs. Then we Lars von Trier’ed ourselves into a corner by only selecting movies that are available to stream instantly, so you’ll have time to check these out before the Halloween spirit is buried beneath the snows of November. Enjoy your nightmares.