The Nightingale, written by Kristin Hannah, is a historical fiction novel set during World War II. It tells the story of two sisters, Vianne and Isabelle, who find themselves on opposite sides of the war. As they navigate the hardships and horrors of the Nazi-occupied France, their bond is tested, and they discover their own strength and resilience. Hannah's evocative storytelling and well-researched historical backdrop make The Nightingale a powerful and emotional read.