Basing the book on true incidents and real people of the Revolutionary War, Kirkpatrick (Trouble’s Daughter, 1998, etc.) recreates the actions of a Patriot spies begun by Robert Townsend and assisted by strong-willed, cool-headed Nancy Strong in the little town of Setauket, New York; Nancy used her clothesline and petticoats to signal the location, spotted by her son, of a whaleboat that would transport a vital letter about British battle plans directly to General George Washington. The complete spy ring route, which carried crucial information from British-occupied New York City to Patriot-held Connecticut, is depicted in a colorful map at the conclusion of the book; the detailed historical notes that follow will intrigue those interested in learning about the strong men and women who were instrumental in changing the nation’s history. Himler’s splendid watercolor paintings illustrate the danger involved in trying to foil the Loyalists and the daily threat of exposure that was faced by the Setauket spies. (map, sources) (Picture book. 5-9)