This is an incredible historical gothic horror. It's a bit on the dense side to begin with, describing the history/religion aspect of the story. But I'm glad I stuck with it because the middle section is some of the best historical horror I've read. It's a fascinating writing style, as the reader gets to delve into the point of view of 3 characters in the form of written accounts, all while reading it as a written account from the first character. It's such a clever style and I felt just like the main character going deeper into this unbelievable nightmare.

The only other historical horror that I can say it reminded me off is 'The Historian' by Elizabeth Kostova (which I did not appreciate fully when I read it). It's a deep, richly storied novel with horror at its core. So good.