Which C.S. Lewis work presents letters from the senior demon Screwtape?

The Screwtape Letters presents letters from the senior demon Screwtape.

C.S. Lewis’s satirical Christian novel was first published in book form in 1942. It consists of letters written by Screwtape, an experienced demon, to his inexperienced nephew Wormwood. Screwtape advises Wormwood on tempting a human patient away from Christian belief and moral discipline.

Lewis reverses the usual viewpoint of religious instruction: readers hear demonic advice and must infer the Christian principles it distorts. The imagined correspondence examines distraction, pride, resentment, social pressure, romantic desire, and spiritual complacency. Its fictional setting is not a conventional story of heroic demons; the devils represent temptation through sharp satire.

The book began as a series of letters published in the Anglican newspaper The Guardian in 1941. Lewis later adapted the material into a volume. The letters’ epistolary form is why Screwtape, rather than a human protagonist, dominates the work’s voice.