Comicbook.com recently made a list of the most dark and disturbing horror films that should be watched this Halloween this season. They listed 'The Killing of a Sacred Deer' which is being streamed on Amazon Prime right now. It puts viewers in the shoes of the main characters and tackles the subjects of vengeance and sacrifice. They also listed 'The Wailing' on Netflix. It's about a Japanese man moves into a remote cabin in in a South Korean village, which is being plagued by a supernatural illness. They compared it to 'The Exorcist.' These two films are definitely scary enough for Halloween.