"The Moon Pool" by Abraham Merritt is a fantasy novel published in 1919. When a mysterious entity called the Dweller rises from Earth's core to capture humans, Dr. Goodwin and pilot Larry O'Keefe descend into an underground realm of ancient races and advanced beings. There they encounter the Silent Ones—angelic creators bound by their love for their dangerous offspring—and two women locked in battle over O'Keefe's fate. As forces of good and evil collide, the fate of the world hangs on one question: can good triumph through love and sacrifice? (This is an automatically generated summary.)