Madeleine L'Engle was an American writer of fiction, nonfiction, poetry, and young adult fiction, including A Wrinkle in Time and its sequels: A Wind in the Door, A Swiftly Tilting Planet, Many Waters, and An Acceptable Time. Her works reflect both her Christian faith and her strong interest in modern science.
I really enjoyed the plot and pacing, but the random horniness/nudity, while accurate, was repeated so often that it became redundant and uncomfortable; otherwise, a great Christian mythology book.