NOBODY'S INNOCENT (by Celia Blanco)

In a small town near Lyon, there were only three people, the rest had fled.
One day, a family was by the town and they stopped to eat something. When they saw the empty town, they wanted to know the reason. The father, a detective, went house after house until he found a pool of blood on the stairs in one of the houses. Next to it there was a book, then the detective supposed that it was a clue. It was about a mayor killed by their neighbors. He asked the three people and when he asked them about the mayor they said that he had died. He suspected that the death was related to the escape.