What is the theme of cask of amontillado?

The theme of "The Cask of Amontillado" by Edgar Allan Poe is revenge. The main character, Montresor, seeks revenge against his supposed friend, Fortunato, for an imagined slight. The story explores the psychological impact of seeking revenge and the consequences that come with it. It also examines the concept of betrayal and the idea that trust can easily be broken. The theme is portrayed through the use of symbolism, foreshadowing, and irony. The story ultimately leaves readers questioning the morality and ethics of seeking revenge.