Well. I finished this book this morning and was very disappointed in the final section. I enjoy mysteries that can actually be figured out and have logical explanations; when I read, I enjoy a world of rational events. This would be a good book for someone who was just reading to read, it's full of detail and historical characters, and it would be good for someone who enjoyed reading about RELIGION! I didn't know it was going to have a religious foundation, which I wish someone would have told me before I was only 100 pages or so from the end! Too ambitious, too convoluted, and not worth the title "mystery." Good general historical fiction, and tons and tons of immersion, although sometimes the details do intrude a little.