What is the name of C.S. Lewis’s 1942 epistolary satire about a senior demon?

C.S. Lewis’s 1942 epistolary satire about a senior demon is The Screwtape Letters.

The book consists of letters from Screwtape, an experienced demon, to his inexperienced nephew Wormwood. Screwtape offers advice on tempting a human subject, but his guidance exposes the self-deception, pride, distraction, and moral confusion that Lewis wanted readers to recognize in ordinary life.

The Screwtape Letters first appeared in book form in 1942. Lewis wrote it during the Second World War, when he was also becoming widely known for Christian broadcasts and public talks. The unusual viewpoint gives the work its satirical force: readers see spiritual dangers described from the perspective of Hell.

It is not a conventional novel with a continuous plot. Instead, its letter format creates a series of connected reflections. The Great Divorce and The Problem of Pain are also major Lewis works, but neither uses Screwtape’s correspondence as its central structure.