Arthur Machen's novella explores the disturbing consequences of toying with the line between the earthly world and the spiritual realm. The Great God Pan centers around an ominous woman named Helen, who lives in the woods and invites morbid happenings. The book faced harsh censure upon its publication in 1894 for its explicit content, but today it is considered a hallmark of horror fiction. Stephen King himself called it "one of the best horror stories ever written," making it essential reading for any dedicated fans of the genre.