Carmilla by LE FANU, Joseph Sheridan

Carmilla is a Gothic novella by Joseph Sheridan le Fanu. First published in 1872, it tells the story of a young womans susceptibility to the attentions of a female vampire named Carmilla. Carmilla predates Bram Stokers Dracula by over twenty years, had a strong influence on Stokers famous novel. (Summary from Wikipedia)