A man has taken his horn in to be repaired and tells the repairman that he was sitting on his back porch polishing his trumpet when he hears voices. He hears a man asking a woman if she had no husband would she marry him. She said she would so the man said he would hit her husband on the head to kill him so that they could get married. So now what's he supposed to do? After all he'd heard a man plotting to commit murder.