The only official sequel, penned by Lewis himself, to the ever-popular 'Screwtape Letters' - published alongside other short essays.
One of the most popular books ever to come from the pen of C.S. Lewis was written in the name of Screwtape, a senior devil, experienced in the art of luring his 'patients' on earth to their own damnation in service of 'our father below' - and training others to do the same.
Screwtape's correspondence with his nephew, an apprentice devil, came into Lewis's hands, he said, by a route he would not disclose, and many a reader has finished the collection longing for more of the insights they gained from its wisdom.
Much to Lewis's resistance, this after-dinner speech, given by Screwtape to a graduating class of demons at a college in hell, came to light a few years after the publication of the original letters.