The best part of this book was the build up and reveal of who is terrorizing Sarah. I like the slow set up, it isn't immediately obvious but the clues did start pointing in a certain direction instead of being completely unhelpful.
 I was so interested in who was doing this and that's what kept me reading this book, because it didn't have much else going for it. Had some grammar mess ups and switched around names a few times during conversations. It got pretty bland for a bit, and I don't really think it needed to be as long as it was. 
Mini rant

The husband drove me insane. I was really hoping Sarah would leave him, I couldn't believe he went as far as he did thinking she was crazy. He kept telling her she wouldn't listen to reason but he was doing the same to her, so set in his mind he was right. 
The entire of part 3 drug on for me, I was hoping for a serious 'i hate you and this why' reveal and the psychopath twist was a unfortunate one in my eye. I wanted a legitimate body to be in Sarahs closet.