Which 1942 C.S. Lewis novel presents letters from a senior demon to a junior tempter?

C.S. Lewis’s 1942 novel presenting letters from a senior demon to a junior tempter is The Screwtape Letters. The book consists of advice written by Screwtape to his nephew Wormwood, who is trying to lead a human away from Christian belief.

Lewis uses the unusual perspective of Hell’s bureaucracy to satirize temptation, self-deception, pride, distraction, and spiritual complacency. Because the letters are written from a demon’s viewpoint, the book’s apparent advice is deliberately the opposite of moral guidance for readers.

The work first appeared in the Anglican newspaper The Guardian during 1941, and Macmillan published it in book form in 1942. Lewis dedicated it to his friend J.R.R. Tolkien, though their friendship did not prevent disagreements about literature and theology.