Once, a policeman’s son was hurrying home through a forest with his dog. Suddenly, he heard men talking, so he went quietly toward them to hear what they were saying. Their leader said: "We will break into the bank and take the money tonight." The boy was afraid the men would see him. The boy thought of a good plan. He took a pencil and a piece of paper out of his pocket and wrote: "Dear father, I am in the forest, some thieves are going to break into the bank tonight, John." Then, he fixed the note to the leather band around his dog's neck and said in a low voice: "Run home". The dog understood and ran away. So, when the thieves broke into the bank, the police caught them.