1960. England. Jennifer Sterling wakes up in a hospital bed after a terrible car accident. She can't remember the circumstances of the accident, her wealthy husband, or even her name. The world around her was alien to her until she stumbled upon letters addressed to her and signed simply with the letter 'B.' The author professed his love for Jennifer and begged her to leave her husband. In the 21st century, Ellie, a young reporter, finds one of the letters in her newspaper's archives. She hopes that a journalistic investigation into the fate of the characters in this letter will not only help restore her shaky career but also suggest a way out of a difficult situation in her personal life.

Jojo Moyes's books have been translated into many languages, regularly appear on the New York Times bestseller list, and the film rights to them are purchased by leading Hollywood film studios.