Carmilla

Laura lives an isolated life with her father, alone in a castle in the Austrian wilderness. When the mysterious Carmilla, a strange and beautiful lady, arrives in the night, no one suspects the supernatural occurrences that follow. But still more unsuspected is the tempestuous romance that blooms between the two young women, and Carmilla's nightmarish secret.
Written 26 years before Stoker's 'Dracula', 'Carmilla' is the original vampire novel. Sheridan Le Fanu combines a chilling Gothic atmosphere with horrifying episodes, boldly exploring the sexual desires of his heroines, and establishing the image of the female vampire. 'Carmilla' is an essential read for all fans of gothic novels and vampires, from Anne Rice's 'Interview with the Vampire' to Netflix's 'The Vampire Diaries'.