Judge Dredd features in the comic "2000 AD". He is a lawman of the judge, jury and executioner. In this story Mega-City One is under siege. A charismatic sociopath, Leviticus Thead, is holed up and if he isn't stopped hundreds of hostages will die.
Stone has written many spin off novels based on the BBC science fiction television series Doctor Who and Judge Dredd.
Stone also contributed a number of comic series to 2000AD and the Judge Dredd Megazine, focusing on the Dreddverse (Judge Dredd universe). In collaboration with David Bishop and artist Shaky Kane he produced the much disliked Soul Sisters, which he has described as "a joke-trip, which through various degrees of miscommunication ended up as a joke-strip without any jokes." Working independently, he created the better received Armitage, a Dreddworld take on Inspector Morse set in a future London, and also contributed to the ongoing Judge Hershey series.
Stone’s most lasting contribution to the world of Judge Dredd might well have been his vision of Brit-Cit, which until Stone’s various novels had been a remarkably underexplored area.
Dredd is like the X-Files, you can do pretty much anything with it: Noir, a musical, gonzo aliens, action, thriller, comedy whatever. Here it goes dark and gritty like the 2012 film, drugs, violence, serial killers. That's fine, as long as it's Dredd I'm pretty happy, but....
The plot is a little disjointed, following the cultists, Dredd in America and Armitage (and Treasure) in the UK. No real help is given with Ameritage if you aren't already familiar with him, and he is about the most entertaining character here. There is unfortunately only one scene with him and Dredd together, and it's great, had the whole book been a buddy-cop thriller with these two sniping at each other it would have been great.
Gritty is also fine, but it's 2116, a lot of culture must have happened between then and now. So why do we have in-story quotes of Andrea Dworkin (who thankfully I think most people have forgotten about) and references to Duchamp and others? It takes us jarringly out of the story.
So... It's fine. If you're a Dredd fan, it's a fun page turner, but with the same plot and characters could have been much better....