Dracula by Bram Stoker

Dracula by Bram Stoker is one of my favorite books because it is one of the only books I've read that has real suspense. The pacing is excellent, the mysteries are terrifying, and the framing of the plot through the lens of diaries and letters make the story even more compelling. This is the origin of modern, Gothic vampire lore, and I highly recommend reading it for a simple yet great thriller, and that comes from someone who HATES horror/thriller movies. The only downside is that the vampires do not sparkle like in Twilight.