Elena Ferrante is maybe the most famous unknown novelist in the world. She's the bestselling, acclaimed author of six books. She's been called the most important Italian writer of her generation. But nobody knows who she is. Elena Ferrante isn't her real name. She's never given a public, in-person interview, and there are no pictures of her online. Ferrante's latest novel, The Story of the Lost Child, came out this week. It's the fourth and final volume of her "Neapolitan novels," a series about best two best friends, Lena and Lila.