Necroscope: Defilers
By Brian Lumley, 2000
Series: Necroscope

"E-Branch's vampire woes intensify in Necroscope Defilers, the 12th installment of Lumley's series. A trio of seriously nasty critters are spreading their spawn on earth, but E-Branch is in crisis. Jake Cutter, the new Necroscope, is preoccupied with a personal vendetta--he's hunting down the Sicilian mobsters who killed his girlfriend. Jake also faces another minor distraction--a dead vampire named Korath is stuck inside his head, whispering evil nothings into his ear all day long. As the unholy monsters descend upon the Greek island of Krassos, it seems all hell will break loose--literally. Will Jake return to E-Branch and help annihilate this unholy scum, or is mankind doomed?" (from Amazon.com)