The Batman could be set to re-introduce the Joker to the franchise after a new trailer seemed to hint at an appearance.The new DC film, which will see Robert Pattinson take on the Caped Crusader, dropped a Japanese trailer in the past day (December 12).At one moment at the end, however, a mysterious and sinister-sounding voice declares with an eerie laugh: “I’ve been trying to reach you, Bruce Wayne.”While this may just be Paul Dano’s Riddler, another moment adds evidence to a possible Joker