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

The Screwtape Letters is narrated through letters written by the demon Screwtape.

Published in 1942, the book is a Christian apologetic work presented as a series of letters from Screwtape, a senior demon, to his inexperienced nephew Wormwood. The correspondence offers inverted advice about tempting a human being and distracting him from Christian faith and virtue.

Lewis uses satire and dramatic irony: the demons’ confident language reveals their moral corruption, while readers are expected to recognize how ordinary habits such as resentment, vanity, distraction, and self-deception can become spiritually significant. The work is fiction, not a literal account of demonology.

The Screwtape Letters was first published in installments in the Anglican newspaper The Guardian before appearing as a book. Lewis later wrote a short follow-up, “Screwtape Proposes a Toast,” which was published separately and is not part of the original sequence of letters.