There was a heavy-security dungeon beneath St. Laurent's Cathedral.
It was a publicly known 'secret' on the Mycroft Continent that churches had dungeons. Thanks to all sorts of knight novels and historical documents even peasants knew that darkness existed beneath those sacred grounds. Against the criminal element and cultists, even priests who gave food to the poor did not show any hints of pity.
That's because they had betrayed their identity as humans, abandoned human morality and left society. They were undoubtedly sub-human scum. It was not necessary to repent for any actions against them; even crueler methods would be forgiven against these beings that deserve to be loathed.
Nobody was dubious against that notion; the cultists tales that spread amongst the people made it known that it was sheer justice.
