As part of the Dark Tower series, I think this book deserves a 4 star rating, although I probably would have given it a 3 if it had been a stand alone book. 
 The story progresses with all the characters now back in New York. There are two main focuses - Roland & Eddie who meet Stephen King himself, and Susannah & Mia about to give birth. As always King gives graphic detail of the worlds his characters inhabit, drawing the reader into the story. On occasions his imagery is difficult to follow. 
 I don't really like the idea of an author being present in his own books. I agree with those who say that generally it's egotistical - however in this case it was at least done fairly well. 
 Being one of a series, the story doesn't really finish, and I will be going on to read Book 7 soon.