The Black Iron Prison is a penitentiary on Callisto owned and operated by the United Jupiter Company. A dark and unpleasant place, the prison itself is a cold, soulless place of metal and concrete, where prisoners live in cramped cells, with two bunks, a pair of chairs, a seat, and the ever-present holographic overseer watching the prisoners every time of the day and night. Corporate robots patrol the dark corridors for any signs of escapees - not that they have a lot of places to escape to.