Song of Susannah / Stephen King / 413 pages

This is the 6th book of King's Dark Tower series.  I was really disappointed in this book.  I willingly went along with King bringing storylines from his other novels into this series, but in this book, he inserts himself and allows his characters to realize they aren't real.  There is an unwritten contract between fiction writers and readers: the writer will try to provide believable characters and an entertaining story if the reader will willingly suspend disbelief for the length of the story.  King had me invested in these characters for five books only to let them come into the "real world" and realize they are only fictional characters.  The only reason to read this book is to keep up with the movement of the story and the characters.  I'm hoping the last book of the series will be better.