Day’s characters can be hoarders, filthy, larcenous and adulterous. But there always emerges a moral point, a discovery or self-discovery, a quick drawing of the breath at what has been revealed or irretrievably lost. Just as Paul in the story “Billion Dollar Dream” digs an elevator shaft and the narrator of “By the Light of the Silvery Moon” digs graves, author Day goes deep for the dirt and watches the sunrise from the hole.