This was slow starting. But after a few chapters it got interesting. I was very interested in the agoraphobia and the window watching. I figured out early on who was messaging her. I was waiting for something to happen. When it finally did, it frustrated me that the police were so flippant and so quick to play good cop/bad cop. And what cop doesn’t do detective work? It also bothered me with all the movie references. I was surprised at the ending. In the end I was so lost that I didn’t know who was real and who wasn’t. And what ever happened to the cat?