Detective Comics #993
Two-Face… dead?! Did the multifaceted mafioso really get killed in a massive explosion? Batman's the detective-let HIM figure it out! And that's just what the Caped Crusader sets out to do, because something's fishy about Dent's latest demise. What the Dark Knight uncovers about his former friend not only threatens Gotham City, it's big enough to threaten the whole world.