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!
Into this unprecedented crisis plunges Jimmy Christopher. Only one man, but a man who embodies the American spirit - and stands prepared to perish to protect his country.
Invasion of the Yellow Warlords is read with stirring intensity by Milton Bagby. Originally published in the June 1935 issue of Operator #5 magazine.