I read that book about 3 weeks ago. Best short story I have ever read. Period. Seriously it blew me away. If you have not read this story before, what are you doing? Go and get it now! It is the best! The writing is phenomenal and the horror is perfect! And the ending is amazingly done! I loved the ending!
I also reccomend The Shining and It. Both are very long, but both are amazing! I LOVE Stephen King. He is hands down my favorite author! And the Mist is some of his best work. I only hope the movie is half as good!