What is the title of C.S. Lewis’s 1942 novel narrated by a senior demon?

The Screwtape Letters is C.S. Lewis’s 1942 novel narrated by a senior demon.

The book consists of letters from Screwtape, an experienced demon, to his inexperienced nephew Wormwood. Screwtape offers advice about tempting a human subject, whom the demons call “the Patient.” Lewis uses the reversed perspective to satirize human weaknesses and explore habits such as distraction, pride, resentment, and self-deception.

The work first appeared in serialized form in the Anglican newspaper The Guardian before being published as a book in 1942. Its unusual viewpoint is central to the design: readers must infer the moral lessons from demonic advice rather than receiving direct sermons. The Screwtape Letters is often confused with The Great Divorce, another Lewis work involving the afterlife, but the two books have different structures and purposes.