Mysteries of Unexplored Worlds #25

This anthology issue contains multiple science fiction and mystery stories. "Dr. Dimon's Surprise" features a scientist who invents a powerful machine but loses control of it. Another story depicts a man named Jerry who discovers a disappearing house deep beneath the earth's surface and must venture down to investigate its mysteries. A third story follows Guy Needon, whose father discovers his son possesses strange gifts; when Guy reaches manhood, he proves to be a genius in some fields yet hopelessly ignorant and awkward in others, particularly when it comes to social graces and romance.