Book excerpt: Two teen-age brothers vanish walking home from school, and are found dead more than twenty miles from their posh Trinity School on the upper west side of Manhattan. They set out to walk home to their family’s Fifth Avenue mansion, near 96thStreet. Were they kidnapped? No ransom demand is ever made. How did the boys get to Westchester County? They both died from blunt force trauma, probably from falling from a tree or a cliff. Based on a real family tragedy from the late Middle Ages but set in today’s New York, Monte Carlo and Westchester County, the story of who did what to whom in the troubled Coniston family is surprising and chilling.