The Alden children knew they would be investigating a mystery at Eton Place, but they had no idea there would be a ghost there, too An old family friend, Norah Eton, believes there is a valuable piece of jewelry hidden somewhere on her property, but she only has one small clue to help the Aldens find it. Will they be able to find the treasure, or will the ghost of the Chattering Bones scare them away first?