Hi amuchan98, thanks very much for the questions. A lot of it is based on research (which is partly why it took so blooming long to write), but it's all been mashed up then stitched back together by my 'over-active' imagination. I don't want to give away too many spoilers but if you Google up the catacombs of Paris, nootropics, Al Farabi, the Brethren or anything else that takes your fancy you'll be able to see how much of it is true.