As you can see most of the top horror films on amazon, we can a see a trend in the market of paranormal and slasher sub-genres so we will merge these two together and create a sub-genre. due to this prediction that the market wont change any time soon, we used amazon as it is a well established website and is a house hold name the company uses a review system like metacritic where it takes users reviews from a one star to a five star rating.