Originally written by master pulpsmith Frederick C. Davis, the Operator #5 series was a clear forerunner of the spy and espionage genre, which exploded in the 1960s. The first Bond film, Dr. No, was released in 1962. Soon, America was surrounded by spies. The Man from U.N.C.L.E., Our Man Flint, and Nick Carter, Killmaster were just a few of the most prolific. Jimmy Christopher was on the job a generation before them all, blazing the espionage trail, and keeping America safe from fascism and other wicked isms.

James Christopher did not technically belong to the U. S. Secret Service. He was a top agent for an American unnamed Intelligence Service. It was in his blood. His father, John Christopher, retired from the same agency years before. Answerable only to his superior, Z-7, and carrying a letter from the President of the United States identifying him as Operator #5, Jimmy Christopher played for keeps. He carried a rapier sewn into his belt, and in a golden skull hanging from his watch-chain was a reservoir of poison to be taken in the event of capture.