It is the fourth and final installment of her Neapolitan Novels, preceded by My Brilliant Friend, The Story of a New Name, and Those Who Leave and Those Who Stay.

[1] After spending two pleasant weeks with Nino in France, Lenù comes back home and insists on getting a divorce.

In response, Lila and Lenù write an article denouncing the Solaras, who now sell heroin in the neighborhood.

Having lost touch with Lila, Lenù breaks a promise she had made and writes about her, publishing a book about their lives called A Friendship.

Inside, she finds the dolls, Tina and Nu, that she and Lila played with as children, and that became a symbol of their friendship.

"[6][7][8] Elissa Schappel, writing for Vanity Fair, reviewed the last book of the Quartet as "This is Ferrante at the height of her brilliance.

"[9] Judith Shulevitz in The Atlantic, praised particularly how the books circle back to its start, to Lila and Lenu's childhood games, in the final installment.

[11] Roger Cohen wrote for The New York Review of Books: "The interacting qualities of the two women are central to the quartet, which is at once introspective and sweeping, personal and political, covering the more than six decades of the two women’s lives and the way those lives intersect with Italy’s upheavals, from the revolutionary violence of the leftist Red Brigades to radical feminism.