I have no idea what to rate this book yet, I need to think on it a while. What a ride.
UPDATE: I can't give this any higher than 3⭐️ because the beginning was hard to get through.

The first 65% of the book is almost painfully slow. The pacing definitely wasn't helped by the large amount of science lingo that took me much longer to digest than a standard read. I don't think I've ever read a fictional work with a bibliography at the back before. I feel either quite intelligent or markedly stupid after reading all the jargon, and I'm still torn on which side of that I'm landing. 

65% onwards, oh boy. A LOT happens and at breakneck speeds. 
Was it horror? Absolutely. Horrifying is actually how I'd describe a lot of the reading experience. I'm a ✨️horror girlie✨️ but I think the slow and somewhat dull beginning to this book really contrasted with the end to leave me with a real "what the actual fuck" feeling. Mouth was agape, pearls were clutched. 

I don't know if this was effective, long game shock horror or just a weirdly paced book. It took me three weeks to reach 53% but then I read the remainder in one night. Do with that information what you will.