In the world outside of the Haven Institute, Lyra and Caelum are finding it hard to be human-and Lyra, infected at Haven with a terrible disease finds her symptoms are growing worse. When Caelum leaves without warning, Lyra follows him, seeking a pioneering organization in Philadelphia that might have a cure. But what they uncover there is a shocking connection to their past, even as their future seems in danger of collapsing.Though Gemma just wants to go back to her normal life after Haven, she...