A new neighborhood. A new school. An unhappy birthday. Things aren't looking great for Gregory. But when he discovers an abandoned chalk factory behind his house, something magical happens: a beautiful garden and a quiet friendship spring up within its walls.

This fascinating new book takes readers into the secret world behind the Revolutionary War in which they can follow the escapades of spies and intelligence agents of the time and learn about the methods used in wartime espionage. Illustrations. Maps.