This book tells a lot about Roland's past, most of which is pretty depressing. (Just thought I'd warn you.) But, it's one of those books you just can't put down. You will also learn a great deal about both Cuthbert and Alain. The mysterious Susan is also brought up, which will tear your heart to shreds. In general, this book mainly consists of the palaver between Roland and the rest of his ka-tet. It will both make you laugh 'til the cows come home and pull your heart to tears. A wonderful book, with many similarites in characters to King's other maginficent works. I believe this series is an ending/disclosure of all his works. I HIGHLY RECOMMEND IT!!!!