Never before has the Spider, Master of Men, crusader extraordinary against the Underworld, been faced with such overwhelming difficulties. A magically persuasive radio voice luring thousands of young people to crime; a scientific madman dealing germicidal death over the nation; every criminal gang in the country organized to levy toll by stark terror... How can Richard Wentworth link these facts, weave a web of retribution for the Doom Dealer? With his beloved Nita captured and waiting for a ghastly old-world torture, his one-time friend Kirkpatrick ordering police on his trail to ‘Kill at Sight!’, his every movement hampered not only by outlaws but by the law itself — can even the Spider find a way to free humanity from the grip of wholesale destruction being planned for it by the greatest of all Crime Masters?

Slaves of the Crime Master is torn from the pages of the April, 1935 issue of The Spider magazine.