In Edgar Allan Poe's "The Cask of Amontillado," the literary device of foreshadowing is used to create mystery when Montressor tells Fortunato

that he has a rare wine called Amontillado in his possession. Montressor hints that he may need Fortunato's expertise to verify the authenticity of the wine, creating a sense of anticipation. Later, when they reach the catacombs, Montressor also mentions the cold and dampness of the catacombs, which foreshadows the impending tragedy. These examples of foreshadowing create a buildup of tension and suspense, leading the reader to wonder what will happen to Fortunato.

about his family coat of arms, which features a golden foot crushing a snake. This foreshadows the eventual fate of Fortunato, as he will be lured into the catacombs and ultimately meet his demise at the hands of Montresor. The symbol of the snake represents deceit and betrayal, which aligns with Montresor's plan to seek revenge on Fortunato for an unspecified wrong done to him. This use of foreshadowing builds suspense and adds to the overall atmosphere of mystery in the story.