The psychological aspect of it. The characters' descent into madness as they try to figure out the mysteries of the house is quite disturbing. It makes you question your own perception of reality, which is a very frightening idea.
The use of multiple narrators. Each narrator has their own perspective and level of unreliability. You're never quite sure who to trust, and this adds to the overall sense of unease and horror throughout the novel.
The way it plays with the concept of space and reality. It makes you question what you see and experience, which is truly scary.
The familiarity of one's own house being turned into a place of horror is terrifying. It's a place that should be safe, but in a horror novel, it becomes a source of danger. For example, in 'The Shining', the hotel which is like a big house, has a malevolent presence that drives the main character crazy. The fact that the main character's family is also in the house makes it even scarier.
Well, it's also about the psychological aspect. The characters' inner demons and the way they are explored in the show can be really unsettling. It makes the viewers question the sanity of the characters and, in a way, their own sanity too. It delves deep into the human psyche, showing the darkest corners of human nature, which is quite terrifying.
The unexpected jumpscares make it terrifying. Just when you think it's safe, something really scary pops up.
The unknown in the car. Maybe there are some unseen and dangerous things lurking in it, like a malevolent spirit that haunts the vehicle.
The power dynamic. Physicians are supposed to heal, but in these novels, they often use their knowledge for evil. For example, in 'The Strange Case of Dr. Jekyll and Mr. Hyde', Dr. Jekyll's position as a respected doctor makes his transformation into the evil Mr. Hyde even more shocking.
The atmosphere. It probably has a really dark and spooky setting, like an old, abandoned house or a fog - covered forest. The descriptions of these places make you feel like you're there, and it's scary.
The setting of the orchard might be a key factor. It could be a place filled with dark secrets, like an old orchard with gnarled trees that seem to have a life of their own at night. Maybe there are strange noises coming from the orchard, or hidden figures lurking among the trees.
The unknown creatures in 'the ruins horror novel' are really scary. They have strange behaviors and appearances that are not of this world, and the characters don't know how to deal with them. It creates a constant sense of dread.
The visual and disturbing elements in 'ring horror novel' contribute to the terror. For example, the description of the cursed object, like the videotape in 'The Ring' novels, with its strange and often grotesque images. These vivid and unsettling descriptions can haunt the reader's mind, making the horror more real and intense.