Mega-City One, a vast city of 400 million inhabitants spanning the Eastern seaboard of 22nd century America. Judges, trained to maintain the law and equipped to deal with the worse that the criminal elements of the city’s inhabitants can throw up. But beyond the mundane crimes of Mega- City One, there is a darker underbelly. Perps who use others minds, bodies and souls for their own diabolic aims. Perps who serve those from the very pits of hell or hail from metaphysical dimensions beyond the abilities of the average Street Judge to deal with. Something malevolent stirs in the depths of the Big Meg and only the specialist Judge Exorcists of Psi Division can purge the evil that has festered within and bring the Law to those who consider themselves above such mundane concerns.