Levi’s older brother Boaz enlisted in the Marines after graduating from high school rather than attend an elite university as expected. Levi has felt the distance grow between them prior to and throughout his enlistment. Now, Boaz—renamed Bo—is returning home from the Middle East. The person who arrives bears little resemblance to his previous self, holing up in his room and barely communicating. When Bo announces his intention of hiking the Appalachian Trail, Levi (who has snooped in Bo's Internet history) knows better. With a little help from best friends Pearl and Zim, he joins Bo on his personal hegira. The first-person, present-tense narration takes readers steadily toward the core of what has happened to Bo. Levi’s reflections and observations are crisply apt and express essentials succinctly. The emotional journey is leavened with humor and a little romance, but it moves toward the conclusion with an inevitability that grabs and doesn’t let go. Every character contributes and brings a point of view that adds to a fuller picture of the personal consequences of war without being simplistically pro or anti. Powerful. (Fiction. 12 & up)