When Detective Judge Armitage is sent to Mega-City One, he thinks that things can't get any worse. Then he runs into Judge Dredd - and discovers his problems have only just begun . . . Chicago, 1926: Mass-murderer Albert Fish is to be executed in the electric chair. But when the lever is pulled, a massive power surge opens a space-time gateway and sends Fish hurtling into the future. Mega-City One, 2116: Judge Dredd is fighting a desperate battle against the fanatical following of a charasmatic Brit-Cit sociopath. Meanwhile, across the city, something strange and frightening is happening to reality. These events are linked. To discover how, Judge Dredd must unwillingly unite with Brit-Cit Judge Armitage to defeat a menace that threatens both their cities - and perhaps the entire world.
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.