To commemorate 80 years since C.S. Lewis' classic satirical novel The Screwtape Letters, The Incendus Letters allows a new generation of readers a glimpse into the perspective of the demons that plague their lives. Follow Maniacus, a maleficent senior demon, as he provides advice to his offspring Incendus, charged with ensuring the condemnation of a human on Earth. Set in the 21st century, Karras uses Lewis' epistolary format to explore the complexities and hidden traps of modern living.

From the personal struggles of temptation, to the continuous trials and tribulations present in various types of relationships, these series of letters act as a mirror for an individual to assess how they can improve their quality of life.