Twelve demons. One woman. Join the hunt.
Tobiah is unexpectedly swept up into the quest of Lady Gray, a figure of legend and fear. Lady Gray and her companion, the surly warrior Sabastian, are on the hunt for twelve demons, known as shades, who have escaped into the world. Only she, bearer of the Graystone, can defeat the shades and return them to their place of imprisonment. Gradually, Tobiah begins to piece together the truth about the lady, whose history is as tragic as her fate.