The Culper Ring was a network of spies active during the American Revolutionary War, organized by Major Benjamin Tallmadge and General George Washington in 1778 during the British occupation of New York City. The name "Culper" was suggested by George Washington and taken from Culpeper County, Virginia. Based on remarkable new research, acclaimed historian Alexander Rose brings to life the true story of the spy ring that helped America win the Revolutionary War. For the first time, Rose takes us beyond the battlefront and deep into the shadowy underworld of double agents and triple crosses, covert operations, and code-breaking, and unmasks the courageous, flawed men who inhabited this wilderness of mirrors-including the spymaster at the heart of it all. After the siege of Boston forced the British to evacuate that city in March 1776, Continental Army commander George Washington suspected that the British would move by sea to New York City, the next logical target in an attempt to end a colonial insurrection. He thus rushed his army south to defend the city.