"Hudson Valley is steeped in mysteries, from Celtic chambers resting in the deep woods of Putnam to Millbrook's abandoned Bennett College. In the Highlands, Iroquois chief Daniel Nimham gave his life for the cause of American independence. One strange night in the Catskills, a legendary playwright miraculously survived a midnight plunge off the suspended Schoharie Bridge. The great passenger steamship Swallow sank near the shores of Athens. Author...