To say that The Screwtape Letters is a popular book by C.S. Lewis would be to make one of the clearest understatements regarding him. It was the first publication that put Lewis on the international radar and even if two different collections of books from the 1950's (The Chronicles of Narnia and Mere Christianity) weren't released, this book would have been enough to give him lasting fame.
Screwtape is one of Lewis's best works.
