There’s something rotten under Nottingham.
The Vatican sends two of its best demon hunters, Father Jasper and Sister Veronica. They investigate the strange disappearances taking place that all seem to lead to the labyrinthine network of man-made sandstone caves under the city.
They soon realise they’re not facing just any demon. Their nemesis is Legion, the infamous prince of Hell first mentioned in the Bible. To have any chance of defeating him and restoring the kidnapped victims to life, they must descend into Hell itself.
They find a terrifying vision of the underworld, where the most horrifying demons they have to face are the ones inside their own heads.