But, yes, it rightly belongs to the horror genre — at least, until the final minutes of the last episode. Some spoilers ahead. Based on the 1959 gothic horror novel by Shirley Jackson, the 10-episode series does start out as a spine-chilling story about the Hugh and Olivia Crain and their five children — Steven, Shirley, Theo, Luke and Nell — who move into Hill House in the summer of 1992. Hugh and Olivia are in the business of flipping houses and selling them. With the size of the Hill House project, they envision that after selling it, they can build their "forever house" and never have to move again.