This book has a good plot (a little bit bizarre, but good) but has a some of problems with characters and fluidity. Definitely, I hated almost all characters, except Rachel for a while. Simple like that. Rachel is problem but in a strange way I liked her, I see her suffering and madness. The others ones were pathetic, selfish and unpleasant to keep following.
The fluidity is controversial because this book was my first reading in english but I think that some things in this book just doesn't seems necessary, doesn't increase the suspense and make the revelation more desirable but not in a good way. Made the book slower and slower and the characters seem worse.
The conclusion is good and with Rachel saved the book from 2 stars