I read the first book about the Catholics, which was a pretty good story but quite badly written. I thought it was a bit far fetched but it’s only a fiction novel?
The next one, which is sitting on my ‘books to read pile’ I don’t think I’ll bother with. This was all explored by David Icke a few years back and although it appears to be true, positioning of buildings, statues, icons, symbology on money, etc. It is can be explained by coincidence or syncronicity, as almost any symbol/pattern can be found in any random ordering of basically anything.
The human thought process which tries to close loops in logic that it can’t understand might be a better subject for a book. You could write it about collateral form study .. 