From the #1 New York Times bestselling author Brandon Sanderson comes the final book in an epic series about a girl who will travel beyond the stars to save the world she loves from destruction. Spensa made it out of the Nowhere; but what she saw in the space between the stars has changed her forever. She came face to face with the Delvers; and finally got answers to the questions she’s had about her own strange Cytonic gifts. The Superiority didn’t stop in it’s fight for galactic dominance while she was gone; though. Spensa’s team; Skyward Flight; was able to hold Winzik off; and even collect allies to help with the cause; but it’s only a matter of time until humanity – and the rest of the galaxy – falls. Defeating them will require all the knowledge Spensa gathered while in the Nowhere. But being Cytonic is more complicated than she ever could have imagined. Now; Spensa must ask herself: how far is she willing to go for victory; if it means losing herself – and her friends – in the process. The final book in the Skyward series will free humanity; or see it fall forever.