The veterinarian's ambulance was jammed, not with afflicted animals, but with human beings — monstrously deformed, and driven out into the street by men with whips! Richard Wentworth beheld this horror, and realized that a new Reign of Terror had struck New York! For somewhere, hidden from the baffled police, was a new Underworld master whom men called the Wreck. Foully misshapen, he had twisted countless victims — by means of drugs and operations — into his own evil image. And with this nightmare army he was plundering Manhattan! No area was safe from his vulture's claws — not even the World's Fair! But Richard Wentworth did not fear to challenge this crime-master — and with the Spider's keen weapons began his fight to save a great metropolis from madness and death.