It took a little while to get used to the rather flowery language, but once you get going it is an enthralling story, nicely told. It felt like a cross between The Name of the Rose (with its hidden libraries and so on) and the Da Vinci Code with its thriller elements. The book is definitely on the long side. Maybe it was me, but some sections read fast and easily and some I struggled through. Sections are written from the perspective of different characters, which was nicely done. Altogether, a good read.