A monster is haunting the sewers of New York City, lacerating and burning its victims with impunity. The police are certain they'll solve the mystery, but when two patrolmen are killed by the fire-breathing threat, their confidence is shaken! This supernatural killer seems all but unstoppable!

Who can the city turn to? The lady evangelist in town to pour oil on troubled waters? The mayor, hosting the navies of the world for a peace conference? The police? When battling a mysterious villain, depend on a mysterious hero -- The Shadow!