As suddenly as Death, the bitter cold came, and with it, the armored tanks, sleek submarines and mailed warriors of the invading legions! An international syndicate, fearing America’s greatness and strength in war, had unleashed savage war-dogs to win the conflict before it fairly began... The greatest military genius of modern times commanded the enemy, and Operator 5 of the United States Secret Service—known to his dearest friends as Jimmy Christopher—was America’s choice to oppose him... But with the Intelligence slaughtered, with Diane in the camp of the enemy, the federal government in hiding, Operator 5 faced the stiffest battle of his career, and the Gods tossed dice to determine the victory!
Henry Steeger, the owner of pulp publisher Popular Publications, launched the monthly pulp magazine "Operator #5," about a hero who would "single-handedly, or almost, save the nation from complete destruction regularly every month," in 1934. The novels were published under the pseudonym Curtis Steele, and were written by Frederick C. Davis until November 1935, then by Emile C. Tepperman until March 1938, and then Wayne Rogers for the remainder of the run.