I was really nervous to go into this book. I wasn't sure if it was going to be for me, but then I saw all of the amazing reviews and I knew I had to try it. If you are looking for a thriller that you won't be able to predict the ending, you need to read this book. I did not see the ending coming. This book alternates perspectives between the doctor and the journal entries of the patient. As the story progresses and the story is presented it is hard to tell what you should believe and who you should trust. I wanted it to be a little more engaging than it was. I had heard that it was a page-turner and I didn't find it as gripping as most reviews said it was. I do feel like it was a book that I could re-read in the future. I recommend this to people who love thrillers.