Agents, double-agents, spies, secret messages, codes, cyphers are the words that evoke the world of intelligence gathering, a necessary tool for the success of any army. George Washington knew better than anyone the value of knowing what your enemy's plans were and to prevent them, if at all possible, from learning your own plans. Amazingly there are still many sites associated with the Culper Spy Ring that you can visit. Bill Bleyer, journalist and historian, tells us about his book, George Washington's Long Island Spy Ring: A History and Tour Guide.