Things That Go Bump in the Night — William Schoell

They dwell in darkness, craving human flesh, thirsting for human blood. Only one man can stop them and keep them from infecting the world--and he is too paralyzed with fear to act.

David Hammond and Anna Braddon arrive in Milbourne, Connecticut where the horribly mutilated body of Anna's brother has been discovered. Nobody knows what caused Jeffery's death, or the mysterious disappearance of other townspeople.

Only one man has the courage to seek the truth, and in a subterranian cavern beneath Milbourne's quiet streets, he has come face to face with a horror beyond description. But he can never share his dreadful knowledge, for the sight has driven him insane . . .