Moonleapers, Book 2: Tangled in Time

In this high-stakes duology closer from New York Times bestselling author Margaret Peterson Haddix, Maisie finds out she's the last moonleaper-unless she can figure out how to change past events to secure the moonleapers' legacy. Maisie was thrilled to become a time-traveling moonleaper and help her Great-Aunt Hazel fix the past-catapulting everyone in the world into a better timeline. But now Hazel's gone, time is glitching, and the only other moonleaper Maisie knows appears to be in grave danger.
Then a mysterious boy named Krieger shows up. Maisie is immediately suspicious because he seems too interested in her secrets. But as it turns out, he has a few secrets of his own. Could working together be the key to fixing time and saving Maisie's friend Ainsley-or will that doom all of humanity to an unbearable future? The clock is ticking, and it's up to Maisie make things right. Or else the moonleapers-and Maisie herself-could be erased from time.forever.