Edgar Allan Poe (1809-49) was a pioneer of what we’d now call the ambiguous horror story, where the supernatural elements of the tale may actually be explained (or explained away) with a psychological explanation. He was also an accomplished poet and a pioneer of science fiction. His 1848 prose-poem Eureka even predicts the Big Bang theory by some eighty years. Poe considered this book his masterpiece, though it is among his least-read prose works today.