Ages 10 & up. In the spirit of Madeleine L'Engle's classic A Wrinkle in Time, this is a fascinating and powerfully involving story about two lonely kids who are inadvertently caught up in the never-ending battle between good and evil. The problems of everyday adolescent life and the mysteries of magic are perfectly blended, along with plenty of humor and suspense. In a starred review, School Library Journal wrote, "well-structured and believable... this fantasy should have wide appeal." Horn Book wrote, "a splendid, unusual fantasy... an outstanding, original work."