Katerina Alexandrovna, Duchess of Oldenburg, wants to be known as a doctor, not a necromancer. But Tsar Alexander III forbids women to attend medical school; his interest in Katerina extends only to her ability to raise the dead. Twice now, Katerina has helped him by using her power to thwart the forces of darkness—vampires bent on resurrecting the lich tsar Konstantin Pavlovich so that he can take what he sees as his rightful place on the throne. Katerina thought she had bound Konstantin to the Greylands, the realm of the dead, but he has found a way out. Now he is searching for the Morning Star, a sword that will allow him to command a legion of supernatural warriors.