"Robots on strike! Sammy's underappreciated mechanical helpers cause chaos in the house! It's up to Sammy and his disabled sister Maddie to keep the peace until his inventor mom reveals her secret project ... and why it was worth the wait"--
"Following clues left by their missing father, twelve-year-old twins Bickford and Rebecca Kidd sail from the Caribbean to New York City with their siblings to finish the dangerous quest of their world-famous treasure-hunting parents"--Provided by publisher.
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.