This series is part of Scholastic's early chapter book line called Branches, which is aimed at newly independent readers. With easy-to-read text, high-interest content, fast-paced plots, and illustrations on every page, these books will boost reading confidence and stamina. Branches books help readers grow! In the second book in the series, Sam Graves's friend Lucy disappears into her locker! Sam and his friend Antonio follow a trail of clues that leads them through the locker and deep inside the school. Will they find Lucy? Will they learn why the school is ALIVE? Sam and Antonio must rescue Lucy from this scary school before it's too late!