Mystery in Space #10

In "The Runaway Space-Train!", a group of humans aboard a cosmic rail journey find themselves stranded on the distant planet Almoran, just as Almoran aliens arrive on Earth in human disguise. When both groups are suddenly rendered unconscious by a mysterious ray from an enemy ship, the humans play dead—then outsmart their attackers. The Almorans, impressed by their courage, grant the Earthlings lasting memories of the adventure while sealing their tongues with a mental block.

In "Earth...Condemned World!", Daryl Halbert, a scientist tracking planetary albedo, is called back to Earth just as his ship is damaged and he's rescued by aliens. They warn him that Earth’s declining reflectivity will soon cause it to break free from the Sun, becoming an invisible threat—and they’ve come to destroy it. Given only seven hours to find a solution, Halbert races to uncover the truth behind the planet’s glassy space dust, discovering a fragile hope in a test that could save Earth and other worlds.

In "Riddle of Asteroid 8794!", Bruce Carlton unravels a mystery that leads from a radio studio to the depths of space, following a cryptic record catalog number to an asteroid where Clark Hale is trapped in a crater. With the help of a surprising clue from a devoted fan, Carlton races against time to uncover buried treasure before the enigmatic "Orion" Batson can claim it.

In "I Stalked the Camouflage Creatures," Jo and Blake investigate a string of thefts at a missile testing base, where security seems flawless—until strange footage reveals furniture coming to life and vanishing into a newly formed crevice. With the help of hidden cameras and a daring descent into the fissure, they uncover a hidden network of shape-shifting creatures using stolen warheads to send signals, but the full truth remains buried beneath the surface.

In "We Battled the Microscopic Menace!" from *Mystery in Space* #10 (1960), scientists Saunders and Drake face a terrifying threat when a tiny, unseen creature begins destroying their mineral samples. After a failed attempt to eliminate it, they track mysterious footprints through a strange, half-built town—only to be pursued by a creature that melts metal and defies conventional weapons. With the help of a portable negative ion generator and a clever use of glass shielding, they finally turn the tide, but the full extent of the danger remains far from over.

In the jungles of South America, Martin acquires a mysterious fiesta mask from a street hawker—only to learn it’s one of three forbidden artifacts, each tied to a primal force. When he dons the Mask of Mastery, he discovers he can command animals, but soon realizes the other two masks—of Fear and Doom—are already in use, unleashing chaos across the land.

When miner Oll Sparks discovers gold after crafting a lucky charm from iron pyrites, his fortune seems sealed—until the charm is broken, and the luck vanishes. Now haunted by the sudden shift, he watches his wealth fade, leaving only memories of a strike that couldn’t be repeated.

In "The Man Who Broke the Light-Speed Barrier!", Jan Holt’s mind is hurled across the cosmos when an experiment accelerates him to light speed, only to awaken in the body of a dog-like alien on a distant world. Stranded and desperate to make contact, he watches helplessly as Earth explorers arrive—only to be rejected, then swept away by a planet’s violent geyser. With no choice, he commandeers their ship and pilots it home, returning to Earth as a hero—only to flee toward the hospital, where his mind begins to reconnect with his original body.