Angels themselves are a controversial subject in the present age. As "Fallen Angel" points out, the existence of angels was once taken as matter-of-fact—youngsters did not debate whether they were aliens, whether there was a heaven, or that angels might not exist. Judson, trying to represent a scientific point of view, declares loudly that there is no such thing as an angel and that there is no Heaven, although he has to yield to the evidence before him and the angel's declaration that it is indeed an angel. Those readers who choose not to believe in angels may find the compelling presentation of one in "Fallen Angel" to be discomfiting. On the other hand, it is science that helps to save the angel: The youngsters draw on their knowledge of fabrics, wood, and coat hangers to fashion the wings that will enable the angel...