Maggie and Hanna, two researchers, discover a strange city in a cavern beneath the sea. There, they unearth an ancient and deadly mystery involving a sunken, 18th Century French ship. Earth is in jeopardy and so are their lives, for although the lost City of Ys is ancient, alien hybrids may yet live and dwell in its dark depths. And if they do, then here, indeed, "there be monsters." A Novella.