A Wrinkle in Time
L'Engle's Newbery Medal winner sends misfit teenager Meg Murry across the universe to rescue her missing father, guided by three celestial beings and powered ultimately by love rather than strategy. What makes it endure is the rare combination: genuine scientific curiosity sitting comfortably alongside explicit Christian faith, with a female protagonist who wins by being stubbornly, imperfectly herself. The honest caveat is one longtime readers know well — listing Jesus alongside other historical defenders of Earth against darkness has troubled some conservative Christian families, and the conformity-horror on Camazotz can slow the middle. Both concerns are worth knowing about in advance. For children nine and up, though, this remains one of the most quietly profound books in the genre.