Secret Agent X: The Fear Merchants

Ripped from the pages of the March 1936 issue of Secret Agent X
magazine, here is The Fear Merchants, a thrilling pulp novel! Includes the great original magazine art. 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 the firefighters struck the pavement they were distorted, bloated husks… Secret Agent X was at that fire. But his manhunt was bloacked by a barrier of the bloated dead.