Shares the true story of an anonymous group of spies who played important roles in winning the Revolutionary War, documenting how they risked their lives to obtain crucial intelligence for General Washington using sophisticated tactics and complex codes.

Hold New York, win the war -- The need for a spy ring -- Launching the ring -- Crossing the Sound -- The ring springs into action -- Townsend joins the fight -- Creating a code -- Mounting tensions and double-dealings -- Washington demands more -- The French connection -- Benedict and Peggy -- Negotiations and treachery -- The deal is done -- Another spy at the gallows -- The ring in peril -- The beginning of the end -- Retaking New York at last -- Life after the ring.