Cece thought the maps were done with her. But the Fourth Map is different. It doesn't show places-it draws people. And this time, it writes her name first. As spirals appear in the sky, drawers open on their own, and forgotten gardens come back to life, Cece and Cyrus must navigate a map that knows them better than they know themselves. But the more they try to understand it, the more the map starts to remember things Cece never lived... and never wanted to. The Fourth Map doesn't want to be read. It wants to remember you.