Planet Comics #49

In "Werewolves From Hydra-Hell," Mysta of the Moon finds herself drawn to Earth as the planet heats dangerously, a crisis masked by the sinister machinations of a greedy corporation—though the true threat lies beneath, with the Sub-Earthlings plotting to seize the surface. Written by Ross Gallun and illustrated by Fran Hopper, this 1947 adventure blends pulp sci-fi and supernatural dread in a tale where the real danger is far below the world's surface. The cover, a striking collaboration by Joe Doolin and John Celardo, captures the eerie tension of the underground menace.