I was pretty disappointed with this book for a number of reasons. Firstly, there was no scare factor in there for me. As a person who hasn't read any other books by Sophie Hannah, I didn't know what style the book would be written in or how the scare element would be implemented. I liked the colloquial style that the book was written in; first-person,and almost like elegant notation at some points. However, there was no "scary moments" for me. Perhaps this is because I knew what sort of direction the book was going to take.
My main blemish that I had with this book was my growing hatred of the main character, Louise. As you progress throughout the book, you start to see that she suffers more and more from psychological problems and other mental problems. The thing that I found annoying was her changing mind and obvious mis-treatment and unfair reasoning for her decisions. One example is when she suggests a deal to Dr. Freeman about the boarding aspect of the school, and then when she is offered the dead, she thinks that it is stupid and there is no way that she would ever agree to it. This issue bugged me more and more throughout the book, and really made me (almost) despise reading what she thought.
In conclusion, I think that there was a lot of potential in the book, but it was not executed properly. The colloquial style works well, but it only really comes alive in the last 2 or possibly 3 chapters. Also, it just wasn't scary enough!