A young American named Sam is drawn far beneath the sea to a hidden world, home of the green girl Xenora. Her land was ruled long ago by the men of Lothar; now a monstrous being called the Lord of Flame holds sway, and its powers threaten the surface world as well as hers.
An exuberant early serial from Amazing Stories, by a writer whose career spanned the whole history of science fiction. Download the free EPUB.