This is a terrible book. I have stared at its 270 pages without actually being able to read them. It's just so abysmally written than I could not grasp it at all. My mind would just slip after a sentence or two, and eventually I would notice that my eyes had just moved over another page full of words without knowing what they contain.

What I got from this book: there are two blokes named Nicholas, one is a dull satanist who builds churches with a secret ingredient in the 1710s, and one who investigates murders in those churches in the 1980s.

Spoiler

In the end of the book, they merge into one single space-time paradoxical freak.

That's all that happens. Now you know it all. Don't bother reading the book.