The masterful story of a lifelong friendship between two very different women with shared histories and buried secrets, tested in the twilight of their lives, set across the arc of the 20th century. Celebrated children's book author Agnes Lee is determined to secure her legacy--to complete what she knows will be the final volume of her pseudonymously written Franklin Square novels; and even more consuming, to permanently protect the peninsula of majestic...

In December 1926, Agatha Christie goes missing. Investigators find her empty car on the edge of a deep, gloomy pond, the only clues some tire tracks nearby and a fur coat left in the car—strange for a frigid night. Her World War I veteran husband and her daughter have no knowledge of her whereabouts, and England unleashes an unprecedented manhunt to find the up-and-coming mystery author. Eleven days later, she reappears, just as mysteriously as...