 Dredd refused to accept them as law enforcers like himself and was determined to capture them, even after they managed to return to their own time from right under his very nose.In the previous Dredd mega-epic, "Necropolis", 60 million citizens of Mega-City One were killed; with no way to dispose of them all with dignity, Chief Judge McGruder had them buried in vast pits outside the city.Judgement Day opens with Sabbat, in an unknown location underground, beginning to raise the dead.