Synopsis: "The monstrous undead are called from their graves. The drinkers of blood raise their goblets over the corpses of their victims. In the black dawn the Wolf lifts its great silver head and howls in a half-human voice. In New York City, the agents of the Nazis are gathering the forces of Evil to unite with the Beast that is ravaging Europe. Bitten on the neck and changing, Jimmy Underhill is the only one who can halt the Nazified swarms in the secret, occult caverns of New York." -- quoted from the Fawcett Gold Medal's paperback cover.