How could a lone man, ceaselessly hunted by the law and a deadly under-world alike, hope to save the terrified city from the Iron Man — a super-being whose cohorts were giant, unconquerable robots of steel! Read how the Master of Men rose up to crush the invincible killers who dealt destruction at every step. Another dramatic, pulse-quickening Spider novel! Follow the Spider, Master of Men, as he dodges gangland guns and police bullets in another roller coaster ride of an adventure! Satan’s Murder Machines is torn from the pages of the December, 1939 issue of The Spider magazine.