Reeling from betrayal, with few options and fewer allies, Renata Convida has reluctantly joined forces with none other than Prince Castian, her most infuriating and intriguing enemy. Their goals: find the fabled Knife of Memory, kill the ruthless King Fernando, and bring peace to the nation. Together, Ren and Castian have a chance to save everything, if only they can set aside their complex and intense feelings for each other. With the king's forces on their heels, their quest leaves little room for mistakes. But the greatest danger is within Ren. The Gray, her fortress of stolen memories, has begun to crumble, threatening her grip on reality. -- adapted from jacket