Grand Canyon Adventure Identical twins Jessica and Elizabeth Wakefield are off on a family trip to the Grand Canyon. They have lots of fun until they find an unexpected canyon treasure a diamond ring. For once the twins can't agree on what to do. Jessica wants to keep the ring. Elizabeth wants to sell it and buy something else with the money. One of the twins has to give in. But which one will it be? Don't miss any of the books in this exciting series!