Beyond any historical consideration and controversy religious, I sought only a good novel mélant adventure machinations and puzzles. I was very disappointed to find nothing all of that. Despite early promising enough, you soon stumble on many naivety of the author. Where we hoped beautiful puzzles found only pathetic "puzzles" for children eight years. The pseudo-historical descriptions and decrypts are only off topic deviations from the plot and uninteresting to the reader only came to be entertained. One seems at times a writing exercise "how to ..." Umberto Eco is a poor student literature.
Write a good end is still very delicate, we here the author imposes a particularly heartbreaking epilogue.