"When a mysterious little free library (guarded by a large orange cat) appears overnight in the small town of Martinville, eleven-year-old Evan plucks two weathered books from its shelves, never suspecting that his life is about to change. Evan and his best friend Rafe quickly discover a link between one of the old books and a long-ago event that none of the grown-ups want to talk about. The two boys start asking questions whose answers will transform...

Visiting her grandmother in Australia, ten-year-old Livy is reminded of the promise she made five years before to Bob, a strange, green creature who cannot recall who or what he is.