The last of Christie's masterpieces, written under the pseudonym Mary Westmacott, her swan song in the genre of psychological novel. To sum up this part of her life, the great writer organizes a gala concert of all human feelings, where the brightest “stars” are the different faces of love. Laura, an unloved child, was filled with a terrible dislike for her little sister, Shirley. However, the accident helped her realize her mistake. Moreover, he forced her to make her sister’s happiness the meaning of her life. Will Shirley be able to live independently and find her own happiness under the burden of excessive love that has replaced boundless hatred?..