I read a story years ago that ended with the captive (male and I think possibly a female too) in separate sleep sacks suspended from the ceiling, hooked into life support stuff. What sticks with me is the Mistress watching as the sacks gently sway, belying the torment going on inside them.
I can’t really remember much more but that specific scene has stuck in my mind ever since. Despite this I cannot for the life of me remember what the story was.
Any help would be very greatly appreciated.