Is there such a thing as supernatural thrillers, or is it just a softer label for horror? International Thriller Writers defines this sprawling category, saying, "This would include (but isn’t limited to) such subjects as murder mystery, detective, suspense, horror, supernatural, action, espionage, true crime, war, adventure, and myriad similar subject areas." So here it suggests that horror could potentially be a sub-genre of thriller. Speculative fiction, another sprawling genre, also claims horror as part of its own. It seems everyone wants a hunk of horro[...]