From bestselling author duo Amie Kaufman and Jay Kristoff comes the exciting finale in the trilogy that broke the sci-fi mold and has been called "stylistically mesmerizing" and "out-of-this-world-awesome." Kady, Ezra, Hanna, and Nik narrowly escaped with their lives from the attacks on Heimdall station and now find themselves crammed with 2,000 refugees on the container ship, Mao . With the jump station destroyed and their resources scarce, the only option is to return to Kerenza--but who knows what they'll find seven months after the invasion? Meanwhile, Kady's cousin, Asha, survived the initial BeiTech assault and has joined Kerenza's ragtag underground resistance. When Rhys--an old flame from Asha's past--reappears on Kerenza, the two find themselves on opposite sides of the conflict. With time running out, a final battle will be waged on land and in space, heros will fall, and hearts will be broken.