The Story of the Lost Child, Elena Ferrante’s fourth and final novel, is largely set in a working-class district of Naples. The narrator in each novel has been Elena Grecco, born the reader is told in August 1944 and this narrative takes us up to 2005 and almost the present day, when she’s an old woman in her late sixties, sitting on her balcony, looking over the Po, a view of Vesuvius and the semicircle of Naples. She is content, a writer, in...