In 1871 Wisconsin, thirteen-year-old Georgia sets out to find her sister Agatha, presumed dead when remains are found wearing the dress she was last seen in, and before the end of the year gains fame as a sharpshooter and foiler of counterfeiters.
Thirteen-year-old Lady Grace Cavendish, maid of honor to Queen Elizabeth I, describes in her diary her efforts to discover who is counterfeiting the new English silver coin.
Legendary Griff Carver joins the Rampart Middle School Hallway Patrol and with the help of his new friends, Griff solves the case of counterfeit hall passes.
While celebrating his birthday with his family, Geronimo realizes someone has replaced all of his money with counterfeit bills and sets out to find the thieves.
When they uncover a conspiracy against America and its fundamental freedoms, the Kidd children, accompanied by their great uncle, crisscross the country in a race to prove that a newly-discovered copy of the Bill of Rights is a forgery.