I don't know how to review this book. Was it absolutely "I need to finish the last 170 pages right now because I can't put it down"? Yes. Did I think it was a satisfying story where I felt for the characters? Absolutely not. I strongly disliked everyone in this book (except, perhaps, Mrs Greene) and the book was certainly kind of lacking in...depth. It was very clear from the start what was going to happen, it was very clear of the commentaries on gender and race and class, including all the character developments, and it indeed happened exactly as you'd expect. 

The ending was sort of "and then this happened. the end". But by god was it good at making me want to read one more page. That alone takes it from a 2.5 to 4/5.