Working for Agent Z-7, head of an unnamed branch of U. S. Intelligence in the decade before the C. I. A. was ever envisioned, Operator #5 was assisted by newspaper reporter Diane Elliott, a two-fisted street kid named Tim Donovan, as well as his twin sister, Nan Christopher. Jimmy’s father, a retired operative himself, often backed him up with sound advice on the fine art of counter-espionage.

Conquering the Rockies, the Purple Emperor’s great war machine rolled on to crush the last vestige of American resistance. Operator #5, seeing his cause already lost, decided upon the incredibly daring, typically American action — of a counter attack! Listen to his mad, secret sortie through enemy territory — across two thousand miles of hell to the guns and ammunition which alone could stave off defeat.