Answer Expert Approved The use of dramatic irony in works with untrustworthy narrators serves to clarify the aim of the tale to the reader by allowing the reader to comprehend and better connect to the narrator's intentions. An example of this usage is found in Graham Greene's 1955 novel, "The Power And The Glory." In this story, a young Spanish priest named Juan Peronists fears that he has lost his faith due to the death of his wife, who was also his mistress. He decides to seek out the man who married them so that he can find redemption for his sins. By having the main character be an unreliable narrator, Greene is able to show the reader how much Juan Peronist is willing to lie about his past relationships to fit in with society. However, despite all of his dishonesty, Juan Peronist still wants to be believed when he tells the truth. This idea is revealed through dramatic irony as well as explained in more detail in the answer below. Dramatic irony is used extensively in fiction written by Graham Greene.