Mysteries of Unexplored Worlds #3

A young centaur insists he's glimpsed a mermaid rising from the lake, but the elders of his camp dismiss his claims as delusion and madness. When they imprison him to protect the community from his supposed madness, he breaks free and rushes back to the water—only to vanish without a trace, leaving the elders to grapple with a truth they'd refused to accept.

Bill Jones is just a clumsy observatory worker pining after his coworker Miriam—until a strange purple light transports him to another world where he stumbles into the role of warrior and champion for Queen Mmmmmm, the realm's most beautiful ruler. As he rises from fighting her battles to winning her heart and being crowned king, rival monarchs plot against him, forcing him to defend everything he's gained in this strange new kingdom.

Sam Cullen's vacation tour into an underground cave system becomes far more than he bargained for when he discovers a hidden civilization that's thrived in the Earth's depths since the Ice Age—and their scorching world has its own brutal laws for surface dwellers. With the help of a sympathetic underground doctor and a beautiful singer named Evna, Sam finds himself caught between desire and survival as he confronts the fierce will of their tribal chief. This 1957 tale of discovery beneath the Earth plunges readers into a fiery, forgotten realm where one man's curiosity may cost him everything.

Dr. Kyle Duran grows suspicious when Major Latimer, leading humanity's first expedition to the planet Tsarus, keeps finding reasons to delay contact with Earth—so Duran and his assistant Verna make the dangerous journey themselves to uncover the truth. What they discover is far more disturbing than miscommunication: the Tsarians have transformed the explorers into mechanical beings sustained by chemical energy, and Latimer is no longer human. Now trapped on an alien world where the inhabitants plan to "process" them into machines, Duran and Verna must find a way to escape before they meet the same fate.

Johnny Smith, a quiet ham radio enthusiast, picks up an unexpected signal from Saturn—a beautiful girl named Satura who's fallen for him through his TV broadcasts. After weeks of long-distance romance, Satura borrows her family's rocket ship to meet him in person at Times Square, but the reality of an interplanetary date proves far more complicated than either of them imagined.