I am just starting to read the Dark Tower books, and I have a question about the order to read them. My question is about the last book, "The Wind Through the Keyhole." I've heard this book takes place between books 4 and 5. My question is, should I read that book between books 4 and 5, or should I read it last, in the order it was published? What I wonder about is if King makes references to books 5-7 in "Keyhole". If so, I'd rather read it last, because I don't want any spoilers if I read it after book 4. But I'm not sure how King intended them to be read, since he's writing it out of chronological order. Any thoughts would be appreciated.