Andre Norton 
Moon Called 

Few authors have achieved such renown as World Fantasy Life Achievement honoree and Science Fiction Writers of America Grand Master Andre Norton. With the love of readers and the praise of critics, Norton’s books have sold millions of copies worldwide.Thora is the Chosen One. Pressed against her breast is the sacred jewel, possessing all the powers of the Moon. Makil is the Man of Pure Light, from the valley of enchantment and the swaying, sensual dance. In the golden scabbard at his side is the magical Sword of Lur.Together they descend into an underground world of soulless machines and eternal night. High Priestess and Warrior, Jewel and Sword, they must join in blood and battle against the Dark Lord.  To fail would mean the Holy Force would fail, and Thora and Makil would forever be entombed in the flesh of evil.