The Screwtape Letters by C.S. Lewis
The book in “three” sentences: This book consists of 31 letters from one demon (Screwtape) to his charge and nephew (Wormwood). Screwtape directs Wormwood in how to tempt “the patient” (a man) away from faith in God and into an eternity in hell. Screwtape’s strategy is to first keep the patient from placing his faith …