This book was amazing. The fact that not only could you not trust the people around her, because of her amnesia, you couldn't trust the narrator either made for such an interesting dynamic. The whole novel has you guessing, and this is one of the few reads that I didn't figure it out 25% in. In fact, I was kept wondering and guessing up until the end. I loved every minute of it, I devoured this book. I'm a new fan of SJ Watson for sure.
The main character Christine is likeable and sympathetic, but not overly so. I could do with a bit more empathy toward her, however it would be hard to write much of a personality to her with her amnesia being the way it is, and the author successfully builds her personality as much as possible as the book (and her life) goes on. My only complaint was that I wanted more, more details, more story. I highly recommend this book, it's one of the best ones I've read all year.