Bertuccio, who is the count's right-hand man, relates his story to the Count,beginning with his discovery that his brother, a soldier, has been slain in Nimes by murderers, and the law was not investigationg it as they should. He went to the King's Attorney, whose name was Villafort (the same man who condemned the Count (Dantes) to prison years before , hoping to glorify himself to the King so he could become the king's attorney, even though he knew Dantes was innocent. 

Now Villafort reats Bertuccio with the same lack of concern- and Bertuccio threatens to kill him.

That much you already know- today you get the story of the infant boy that Bertuccio rescued-