If you're curious about erotic horror and like historical works, try Carmilla by Joseph Sheridan Le Fanu. This novella, first published in 1872, predates the much lengthier Dracula. At roughly 100
pages, it is the perfect fall afternoon read.
Get a free copy from Project Gutenburg.
After enjoying the novella, you might hunt down, The Vampire Lovers, a swanky, fun film based on the story.