Beschreibung:
When a desperate caller at Doc Savage headquarters is mysteriously struck down, the only clue is a hideous snake-haired silhouette branded on Doc's wall. The horror intensifies after an autopsy shows that the dead man's brain had been petrified - turned to stone! A trail of cold corpses leads the Man of Bronze to gangster-dominated Chicago and a bewildering maze of suspects, motivations and cross purposes. As more victims pile up, hysteria seizes the Windy City. The finger of suspicion points at criminals and scientists alike. Even toward Doc Savage himself!