In May 2007, 42 Entertainment began a viral marketing campaign utilizing the film's "Why So Serious?" tagline with the launch of a website featuring the fictional political campaign of Harvey Dent, with the caption, "I Believe in Harvey Dent".
U svibnju 2007., 42 Entertainmnent započeo je marketinšku kampanju s naglaskom na slogan filma "Why So Serious?" uz istodobno lansiranje internetske stranice s izmišljenom političkom kampanjom Hatveyja Denta, uz sliku s natpisom "I Believe in Harvey Dent" ("Ja vjerujem u Harveyja Denta").