A Swiftly Tilting Planet by Madeleine L’Engle
The third in the time quintet series, I began to get confused with who was who! I enjoyed reading it all the same, and it seems as though the foundation of the story continues to be similar as the first two. A Wrinkle in Time, the first of the quintet, remains my favorite. Onward to the fourth book, Many Waters …. maybe!