Description
By land and by sea the ferocious Yellow Hordes descend upon the United States, dealing destruction with new and horrifying weapons: with viscid poisons, with lethal gases, with flaming thermite—and with an invisible death-force more fearful, more annihilating than any weapon yet known to man. Before the ruthless Asiatic Invaders even Operator 5, America’s Secret Service Ace, stands helpless—hunted like a rat, harried and set upon by those who should be striving shoulder to shoulder with him to turn back the greatest Yellow Threat ever to assail the bulwarks of Western Civilization!
