Must the Specialist, Eli Podgram, destroy himself to free the world from its most deadly peril - the powers of darkness?

Never had Eli Podgram expected to return to that dank, decaying castle in vampire-ridden Transylvania which held the dark secrets of his heritage. But the call came, a call from the simple and kindly people of his ancestral estates who had reared and protected him in his youth. It was their plea the Specialist could not ignore.

He could not know that the Twilight World had massed its powers to lure him back to the one place in the world where he was most vulnerable to their powers - the home of the werewolf, the vampire, the part-woman part-cat who was evil incarnate. All these were ready to meet and overpower Eli Podgram on his return home.

How was he to combat the last and most fiendish weapon of all? How could he conquer his own blood?