Operating out of the supposedly haunted Montgomery Mansion, Secret Agent “X” ventures forth in a bewildering array of false identities to infiltrate the darkest underbellies of the Underworld—and destroy it from within. The only clue to his true identity is his haunting whistle.... Flame demons swept across the city. And in their scorching wake came a new horror. The firemen fighting the vast inferno suddenly toppled from their ladders, their shrieks piercing the blazing roar. For when those firefighters struck the pavement they were distorted, bloated husks .... Secret Agent “X” was at that fire. But his manhunt was blocked by a barrier of the bloated dead. Follow the Man of a Thousand Faces as he confronts the menace of The Fear Merchants, ripped from the pages of Secret Agent “X” magazine, March 1936.