James Christopher is the real name of the legendary Intelligence Service agent designated as Operator #5. Armed with a .45 automatic and a flexible rapier concealed in his belt, he stood against the fearsome forces—both foreign and domestic—who were bent on destroying the United States of America. During the dark days of the Great Depression, when Europe was overrun by fascist dictators, he was our greatest secret agent. Invisible, secret, deadly, the Masked Empire wielded its dread power of darkness throughout the nation. Havoc and ruin followed the terror-torn thousands who fled the country to escape the Thirteenth Darkness. America, faced with certain disaster, placed her chance of survival in one man’s capable hands—and prayed that the warrior gods might smile once more upon the miracle man of her Secret Service—Jimmy Christopher!