Well, just the fact that the characters are all dressed up for a masquerade party, already adds to the eerie mood. But what really seals the coffin is when Montressor lures Fortunato into the catacombs, and then ties him up. You really get the whole creepo-vibe, when Montressor starts to seal up the "tomb". Hope this helps you a lot.
The two things was that he was born in a rich family and he had a fairy tale as his sister
The answer is is a because firey is means mad
Answer:
Would know is the correct answer
Maybe she was very bright in her actions and looks