Boston in 1775 is an island city occupied by British troops after a series of incendiary incidents by patriots who range from sober citizens to thuggish vigilantes. After the Boston Tea Party, British and American soldiers and Massachusetts residents have warily maneuvered around each other until April 19, when violence finally erupts at Lexington and Concord. In June, however, with the city cut off from supplies by a British blockade and Patriot...