Many Waters (Time, #4)

Many Waters is a 1986 novel by Madeleine L'Engle, part of the author's Time Quintet (also known as the Time Quartet). The title is taken from the Song of Solomon 8:7: "Many waters cannot quench love, neither can the floods drown it. If a man were to give all his wealth for love, it would be utterly scorned." The principal characters of the story are Sandy and Dennys Murry, twin brothers who are somewhat out of place in the context of the multifarious and eccentric Murry family from A Wrinkle in Time. The action of the story follows that of A Wind in the Door but precedes the climactic, apocalyptic event in A Swiftly Tilting Planet.