This book is very good. That's all you need to know. 
 Some parts of the story are a little predictable, but not in the "ugh, hurry up with this 'cause I know it's gonna happen!" way. It works well. Tension is still built, and the end is still satisfying. 
 The overall aura of the book is a tad melancholy, though I suppose that works. Maybe that's just me. I also didn't personally warm to any of the characters, but I was still rooting for them. I guess that's something. 
 Like I said: good book, 4 stars. 
 Buuut, just a quick note: (view spoiler)[it was kind of a Deus Ex Machina to have Jill "suddenly remember" the adult adoption. It wasn't quite a cop-out, it just would have been nice if it was mentioned beforehand in the book (unless it was, very subtly, in which case I didn't pick it up). 
 Oh, and I don't like all that "have a baby = instantly love it!!" thing - but that's probably just me. Things aren't that simple. Also babies are gross. (hide spoiler)]