Answer: you need to take in that there might be counter arguments you need to have proof or evidence of some sort, and you also need strong visual language.
Explanation:
The servants do not "abscond" because Montresor tells them to stay at home; they do so because he tells them he will be gone all night. They don't care if he finds out that they all left to join in the carnival. He can't fire them because he can't get anybody to replace them.
