The night before the morning that Tracey’s mother left, her dad took the early train and arrived home just past six. It was an event that occurred with less frequency since Tom had become a name partner at O’Malley, Sugarman, Rizzo, and Gray. Usually, on weekdays he was gone before Tracey left for school. She didn’t see again him until nine o’clock, when he came home smelling of single malt scotch…