Mystic #50

A well-dressed man reaches for the door of a house with a "For Sale" sign out front, while a woman in red and an older gentleman look on — but through the open doorway, a bubbling cauldron over open flames hints that something deeply unsettling awaits inside. Atlas's Mystic #50 from 1956 packages that eerie cover scene, teased by the story blurb "When the Door Opens, What Will They See… In the Darkness!", alongside tales including "Man of Mystery!" and "Creature in Hiding!" — a full lineup of the uncanny. Carl Burgos's cover art sets the tension perfectly, turning an ordinary real-estate visit into a genuinely creepy proposition.