Which C.S. Lewis book is narrated by the demon Screwtape?

The Screwtape Letters is the C.S. Lewis book narrated through advice from the demon Screwtape.

First published in book form in 1942, the work consists of letters from Screwtape, a senior tempter in Hell, to his inexperienced nephew Wormwood. Screwtape offers strategic advice about how to influence a human patient, while Lewis uses the reversed viewpoint to criticize vanity, distraction, resentment, and self-deception.

The unusual structure began as a series of letters published in the Anglican newspaper The Guardian. Lewis later expanded the material for book publication and added a final piece known as “Screwtape Proposes a Toast” in later editions.

The book is a satirical Christian work, not a literal handbook of demonology. Its irony depends on readers recognizing that Screwtape’s confident advice exposes the moral weaknesses of the tempters themselves. Because the narrator is deliberately unreliable, the book’s claims should be read as literary satire and spiritual reflection.