Island of Fire Unwanteds Series 3 by Lisa McMann

The fate of Artime is at stake-and an unlikely alliance could redeem it-in book three in the New York Times bestselling Unwanted series. The magical world of Artime is gone. The Unwanted have no food, no water, and no hope. And everyone is looking to Alex Stowe for answers. Overwhelmed and feeling totally helpless, Alex knows it's up to him to find a way to restore Artime, rescue his captive friends, and free Megan from her voice-stealing necklace of thorns-three impossible tasks. But could help lie with the silent, orange-eyed newcomers. Meanwhile, in the stark land of Quill, Alex's twin brother Aaron continues to build his army, preparing for the ultimate showdown with the Unwanted. But a shocking twist reveals that Alex and Aaron share a common enemy more dangerous than either could have imagined.