Which C.S. Lewis book follows the demon Screwtape’s advice to his nephew Wormwood?

The Screwtape Letters follows the demon Screwtape’s advice to his nephew Wormwood.

C.S. Lewis published The Screwtape Letters in book form in 1942. It is structured as a series of fictional letters from Screwtape, an experienced demon, to Wormwood, a younger tempter assigned to influence a human patient. Lewis uses the reversed viewpoint to satirize temptation and expose habits such as distraction, vanity, resentment, and self-deception.

The book is not presented as a conventional narrative with a continuous plot. Its letter format lets Lewis examine moral and spiritual ideas through irony. Screwtape’s advice is deliberately unreliable because it comes from a demonic speaker who misunderstands or opposes goodness.

The work became one of Lewis’s most widely read Christian books. Its unusual perspective can lead readers to mistake the title character for the human protagonist, but Screwtape is the senior demon writing the letters, while Wormwood is his nephew and subordinate.