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

The resolution in 'The Cask of Amontillado' occurs when Montresor has finished bricking up the niche in which Fortunato is chained and leaves with the salutation "In pace resquiescat." This is where the conflict between Montresor and Fortunato is settled for good and it is clear that Montresor has achieved his plan to exact the perfect revenge on Fortunato.