The Thirteenth Tale is a cozy antique mystery book written by Diane Setterfield. The story revolves around Margaret Lea, a young biographer who is summoned to write the biography of Vida Winter, a famous and reclusive author. As Margaret delves into Vida's past, she uncovers a dark family secret that has haunted Vida for decades. This cozy mystery is a mesmerizing blend of gothic atmosphere, literary intrigue, and haunting revelations.