John Wagner 
Judge Dredd Day Of Chaos [PDF ebook] 
The Fourth Faction

WITH THE MUCH-LOVED MAYOR OF MEGA-CITY ONE PRESUMED DEAD BY THE CITIZENS, an election has been scheduled to choose his successor. Cadet Judge Hennessey has predicted that something terrible will happen on election day and she may be right. East-Meg assassin Nadia has arrived in the Big Meg, looking for a scientist who has created a very dangerous virus… This game-changing beginning to the biggest Judge Dredd story ever written, has been produced by comics’ legend and Judge Dredd co-creator John Wagner (A History of Violence, Button Man), and features the incredible artwork of Staz Johnson (Detective Comics, Catwoman), Henry Flint (Zombo, Shakara), Colin Mac Neil (Song of the Surfer, Insurrection) and Ben Willsher (Lenny Zero).