I'm writing this review a month after finishing this book, and I have thoughts! I am not normally a paranormal fan, but this book has to be one of the few exceptions. The entirety of the plot twist was mind blowing in my opinion. Yes, I felt as thought the first 60% of the book was slow, but that ending made it all worth it. I understand the slow burn that was needed to show the insanity of the main character getting worse and worse. If you don't like paranormal, then you may not enjoy this one as much. If you are already a fan of Sarah Pinborough, then you'll like this one. She comes up with such original plot lines. This plot has stuck with me since I read it!