Knowing montressor's intentions towards fortunato as we read "the cask of amontillado" provides the story with what literary element?

Montressor's dark intentions towards Fortunato provides and sets up the mood in the story. The mood is one of element in literature where it is usually known as the 'atmosphere' of the story. With Montressor's desire for revenge, it has already put the readers to the emotional setting exhibited by the character, which is on bitterness and hatred.