Like Dave Eggers's Zeitoun and Alexander Masters's Stuart, this is a tour de force of narrative reportage. Mohammed Ashraf studied biology, became a butcher, a tailor, and an electrician's apprentice; now he is a homeless day laborer in the heart of old Delhi. How did he end up this way? In an astonishing debut, Aman Sethi brings him and his indelible group of friends to life through their adventures and misfortunes in the Old Delhi Railway...