What is the conflict of 'The Cask of Amontillado'?

External Conflict: The conflict in the story is between Montresor and Fortunato. Montresor is having difficulties persuading Fortunato to follow him to the catacombs where Montresor later traps him by building a brick wall. Internal Conflict: Montresor had to build up his plan to trap Montresor. Montresor had to make sure no one witnessed him lead Fortunato out of the carnival.