Publisher's Synopsis
It is 1759, and scientists are mapping the laws of the natural world, disproving ancient superstition. The Onyx Court fear that magic is losing its place in the world - and science threatens to expose the Court to hostile eyes. Yet they and the mortals above may have to harness both magic and science to defeat a common foe. A comet is coming, one to which a great foe is harnessed. They can't defeat it by magic alone, and time is running out.