I'm not sure if these fit your request but they do deal with imprisonment. If you haven't read this story, you might want to read ABOUT it before you read it if you are particularly sensitive about warnings.

There is The Pillory by Kitty Fisher, http://www.thecircuitarchive.com/tca/archive/5/thepillory.html

Or here with more warnings: http://hatstand.slashcity.net/kitty/pillory.html

Be aware that The Pillory is a controversial story. Some info is here: http://fanlore.org/wiki/The_Pillory (Many spoilers on this page if that is something you care about.)

And one of the sequels, Any Other World by Andromeda. http://community.livejournal.com/ci5_boxoftricks/15186.html

I'm adding a story I really love: Rediscovered in a Graveyward by HG: http://archiveofourown.org/works/317527