"Dracula" is (in a sense) the original vampire novel. It was written way back in 1897 by Irish novelist, Bram Stoker (who was 50 years old at the time). This work of fiction not only introduced the character of Count Dracula, but, it also firmly established many conventions pertaining to the vampire-folklore fantasy, as well.
This novel tells the detailed story of Dracula's attempt to move from Transylvania to England in order to find new blood and spread the undead curse. He is, of course, met with fierce opposition by a small group of men and women led by Professor Abraham Van Helsing.
I think it's interesting to note that this novel was not at all popular when first published. It wasn't until the 1922 movie adaptation of the story that this work of horror-fiction gained positive and widespread recognition.