Hi Guys, first time poster I started reading the dark tower series in 99 and reached book 4 about 8 years ago and was only about half way through. Other things in life happened and put the series on hold. Im now started book 4 from the begining again and plan on finishing the series. Now the the wind through the keyhole is out Im wondering if it would be better to read that before book 5 since it takes place between 4 and 5? will it give anything away about books 5, 6 and 7? Or is completely its own thing and would fit in just like it was made in the series? Thoughts anyone? Please no spoilers, as I have never read past the middle of book 4 thankyou