Borders of darkness

Isabella in the Labyrinth of Atrocities and Secrets

Deep underground, there exists a place that no one speaks of. And those who know of it have sworn an oath of silence. Within its depths, the stench of blood, perversion, secret desires and atrocities mingle.
This world is inaccessible to ordinary people. Its gates only open for the wealthy, so they can pay to satisfy even their wildest fantasies. Cameras watch every movement, every act of desperation and cruelty.
This is where Isabella wakes up. With no memory of how she got here.
What do they want from her? Who are they, and why are they watching her? And why her? Only one of the sadists looks at her differently. Will he change the rules of the game?