"William," began the lineman, "one of these lads saved my life a while ago. Now don't get excited--take things calmly. No one is going to hurt you, or your turtles," and he spoke almost as he might to a child, or to a sick person. "I just want to introduce you to these boys. They are looking for a diamond bracelet, and they think maybe you could help them find it. Boys, this is my cousin, William Lang," and Bart thought the lineman winked significantly at him. Was there more to the mystery?