In general, when a novel manipulates its material to conform to the pieties of the day, or alternatively to attack those pieties for no other reason than the visibility such an attack will generate, when its literary tropes are all too familiar, its clever prose reminiscent of other clever prose, then the compass needle is slipping away from true north . . . When, on the other hand, the author renounces some easy twist, some expected payoff, to take us into territory we didn’t expect but that nevertheless fits with the drift of the story, then the novel gains force and conviction. And when he or she does it again, telling quite a different story that is nevertheless driven by the same urgent tensions, then we are likely moving into the zone of authenticity.