From New Yorker staff writer and Harvard historian Jill Lepore, the dark, spellbinding tale of her restless search for the missing longest book ever written, a century-old manuscript called “The Oral History of Our Time.”

Joe Gould’s Teeth is a Poe-like tale of detection, madness, and invention. Digging through archives all over the country, Lepore unearthed evidence that “The Oral History of Our Time” did in fact once exist. Relying on letters, scraps, and Gould’s own diaries and notebooks—including volumes of his lost manuscript—Lepore argues that Joe Gould’s real secret had to do with sex and the color line, with modernists’ relationship to the Harlem Renaissance, and, above all, with Gould’s terrifying obsession with the African American sculptor Augusta Savage. In ways that even Gould himself could not have imagined, what Gould wrote down really is a history of our time: unsettling and ferocious.