Assumpta Mary-Margaret O'Connor's demon mark makes her fair game for any passing demon-and an attractive bargaining chip in the political alliances of Hell. Both courted-and stalked-by demons, she realizes she'll never have peace until she rids herself of the demon's mark. With the aid of her pendulum and the help of Brona Daly-resident ghost of Baltimore's Enoch Pratt Library- Assumpta discovers the one sure-fire way to get rid of the mark: make...