New York Times and USA Today bestselling author Jennifer A. Nielsen delivers the action-packed conclusion to her magical Mark of the Thief trilogy! Trouble has a way of seeking out Nicolas Calva, and it's not likely to leave him alone any time soon. With Caesar's magic bulla, the Malice of Mars, and the possibility of a Jupiter Stone in play, all the powers of Rome are circling Nic. He'll have to maneuver his way through scheming government officials and reawakened magical beasts to save the Empire. Can he manage to keep his friends and family safe, claim his own freedom once and for all, and rescue the Empire—before the magic gets the better of him? With twists and turns on every page, critically acclaimed author Jennifer Nielsen weaves an epic, action-packed conclusion to her extraordinary Mark of the Thief trilogy.