Struggled over rating this book. Where I did enjoy it and it was very captivating, I kept getting lost in the holes (or between the fold...if you will). Where there's no real science behind the events, that wasn't the issue. In 14, Clines allows you to overlook that by providing history into Lovecraft, Tesla, etc. The Fold has none of that, then there is an expectation of commonality between this and 14, but I kept getting like the details were off. Those struggles kept me from enjoying the book as much as I could have. But still fun read.