Some flirty maids.
The story goes like this:
The maids weren't slaves, not exactly.
But as they had all discovered, neither were they *exactly* free to leave.
In one way or another, each had had to find a way to live with this reality, without succumbing to despair.
They served members and guests during the day in the club rooms, delivering drinks and food, books and papers, acting even as secretaries and making up numbers for games.
They were used sexually there, too, in full view of all present.
This was distressing and shaming, especially since all of them had been thoroughly trained, such that should the person using them (mostly, but not exclusively men) tell them that they were permitted to orgasm, they knew that they must take this as an instruction, and make every effort to reach a climax, and further, to let the intensity of their experience be very obvious (any girl suspected of faking was cruelly punished).
To orgasm to order, through loveless and often cruel or brutal sexual usage by a stranger, in a room filled with other strangers, ate away at the soul. It was a rare girl who did not succumb to helpless nymphomania after only a few months of such service - unable to experience themselves as worthy of anything unless they were being fucked, or in the few moments afterward.
On the other hand, in the open rooms of the Castle (for that was the name of the club,
of which many tales have been told), things could only go so far.
In the evenings, though, maids could be bought and taken to private rooms and specialty rooms (including a well appointed dungeon), where much more thorough and cruel debaucheries were permissible - and indeed, encouraged, since providing helplessly submissive young women for the casual entertainment of wealthy sexual sadists was the central purpose of the Castle.
The maids had quickly learned that those arriving later in the evening were usually further gone with drink or other stimulation, so that it made sense to attract a booking earlier in the evening - hence the wanton eagerness with which they display themselves here, hoping for an evening more filled with rape and brutalising sex than with beatings and other cruelties.