[The review below doesn't seem to be about this book at all (is it a mistake? Is it intended to be about a different book? e.g. Gregory / movie rights)]
Anyway, this is an excellent, ground-breaking, and classic study of the idea of sanctity in early Christianity, which provides an accessible and interesting introduction to the development of the cult of the saints, that is, the veneration of martyrs and holy men and women. This book would be of extreme value to students of theology / ancient history, and would also be an intriguing introduction for those who are interested in learning a little more about the development of early Christianity and the origins of the cult of the saints.