Arguably Gordon Lish's masterpiece, Peru begins with its narrator announcing, «There is nothing which I will not tell you if I can think of it.» Gradually, the story of a dark childhood secret—real or imagined—unfolds: in 1940, six-year-old Gordon murdered his harelipped rival, Steven Adinoff, in a Long Island sandbox . . . (unless he didn't). Peru's narrator weaves together strands of disconnected, mesmerizing trivia, resurrecting memories of the mundane suburban childhood that...