Literary || Please enjoy this excerpt of Tom Perrotta's The Leftovers, out now from St. Martin's Press. (Take a look at this NPR article for more info on the inspiration for the novel.) What ifwhoosh, right now, with no explanationa number of us simply vanished? Would some of us collapse? Would others of us go on, one foot in front of the other, as we did before the world turned upside down?