Sequel to NT II : Riley's Declaration of Independence. Riley and Alexis's adventures continue. This time, they're in Alexis's home state of Texas trying to piece together the mystery surrounding a lost pirate treasure and Riley's disowned twin brother.

National Treasure II:Riley's Declaration of Independence. Riley helps a woman his age when her car is stolen. Is the key she wears the key to the other half of the treasure of the Knights Templar? And Ian's escaped from prison and he's bent on revenge!