This is a fictional book by C.S. Lewis which he dedicated to J.R.R. Tolkien. Lewis wrote the book as if it were the letters of a elder devil to his younger, inexperienced nephew. Screwtape, the experienced demon, instructs the young Wormwood in how to handle his "patient," and keep him from falling into the hands of the "enemy," God. It is quite an interesting book, and becomes more interesting since the "patient" enters WWII, is killed, and leaves the world ready for God. This is not at all to the liking of Screwtape, and there are reprecussions for Wormwood and a lesson for us.