This book is, in many ways, a hard book to read. It's not a story designed to suck you in, but it keeps you at a distance. It is, early on, a cerebral story where the reader is asked to spend a lot of time thinking about the characters rather than feeling with them. It feels almost like a documentary and it has that almost videographic eye in what it sees.
It is, in many ways, a book that is better without talking about it and although it can survive knowing what happens at the end, it's better when one doesn't. But like the rest of it, the twists are cerebral and it is only near the end that the reader has seen enough to feel.
And there's more than enough feeling in the ending.