I am a great fan of Daniel Silva's books featuring Gabriel Allon. This book is a first rate addition to that series. Once again he travels down the path of featuring a story mostly having to do with his interesting, if odd-fellows-to-be-friends relationship, between the Director of Israel's Mossad and key figures in Vatican, including the Pope. I am not going to get into spoilers, except to say that Silva once again has written a compelling tale that is hard to put down once you start it. There is, however, a more poignant, and relevant side to this particular story as it touches on the theological and political implications of the role of Christianity in fostering (or not) antisemitism. If you are a Christian or Jewish, you should be prepared for a novel that may touch you beyond the story. Silva does pen an author's note at the end separating fact from fiction, which I always greatly appreciate from novelists who intertwine history and fiction. I highly recommend you read it when the book is done.