Necroscope III: The Source

Beyond death to eternal damnation... Russia's Ural mountains hide a deadly secret: a supernatural portal.  Soviet scientists and ESP-powered spies, in a secret military base, study the portal--and the powerfully evil creatures that emerge from it, intent on ravaging mankind.  When Jazz Simmons, a British agent sent to infiltrate the base, is captured by the KGB esp-ionage squad and forced through the portal, his last message tells Harry Keogh, necroscope, that the vampires are preparing for a mass invasion. Harry has only one option: to strike first.  He must carry the human-vampire war to the vampires' own lands.  But his strongest psychic power will be useless there--what good the power to summon the dead, in a country where nothing ever dies, where every man, woman, and child becomes a half-dead servant of the Vamphyri?