I'd recommend 'Dracula' by Bram Stoker. This classic horror novel introduced the world to the iconic vampire, Count Dracula. The epistolary style of writing, with different characters' accounts, adds to the mystery and horror. The descriptions of Dracula's powers and his attempts to spread his vampiric influence are spine - chilling, and it has influenced countless horror works since its publication.
One of the best horror novels to read is 'The Shining' by Stephen King. It takes place in an isolated hotel with a disturbing past. The slow build - up of tension as the main character, Jack, descends into madness is truly terrifying. The hotel seems to have a life of its own, with ghosts and strange occurrences that keep you on the edge of your seat throughout the story.
'Pet Sematary' by Stephen King is also a great choice. It deals with the concept of death and the things that come back wrong. The idea of a burial ground that brings the dead back to life, but not in the way one would hope, is both creepy and thought - provoking. King's ability to tap into our deepest fears about mortality and the unknown makes this a standout horror novel.