Best books of 2015

The year's notable fiction, poetry and nonfiction, selected by the editors of The New York Times Book Review. FICTION & POETRY THE STORY OF THE LOST CHILD. Book 4, The Neapolitan Novels: "Maturity, Old Age." By Elena Ferrante. Translated by Ann Goldstein. (Europa Editions, paper, $18.)

TED Talk speakers share their recommended books.