In the extra-sized finale of Sean Murphy's top-selling miniseries, Jack Napier's suspicious seduction of Gotham City comes to its twisted conclusion! With the city on the verge of becoming an icy tomb for the GTO, Batgirl makes a crucial assist and Gordon is forced to reevaluate his judgment of Batman to secure the greater good. As the true Joker's return becomes imminent, Harley seeks vengeance and reckons with the bleak future that looms for her loved ones.