The Mystery of the Fallen Treasure (The Boxcar Children Series #132)

On their trip to Oregon, the Aldens are excited to find out that Watch has the right skills to be a search and rescue dog! When they start training him in the woods one of the first things he "rescues" is a backpack filled with valuable jewelry--and it fell out of a plane! How could that have happened? When the children try to return the backpack to its owner, the mystery becomes even deeper!