They Thirst by Robert McCammon

"An epic tale of an army of vampires bent on world dominion, the adrenalized, splatter-happy narrative, set in Los Angeles, reflects McCammon's pulp-horror roots even as, in its richness of character and subplot, it presages his latter work (and the influence of Stephen King). Suspenseful, exciting, and visceral--Prince Vulkan of the vampires makes a particularly nasty impression--and a treat for new-found McCammon fans." (from Kirkus Reviews)

Paperback Info: ISBN 0671735632, Pocket Books, 1981