User blog comment:Negiiz/What DLC would you like for Skyrim?/@comment-4947435-20120420010106/@comment-4057437-20120422083619

Yes, there ARE prisons of sorts in the Shivering Isles, Syl has one under the House of Dementia for her personal enemies. If one is nabbed and end up doing time it is either in a secret room in Aichan, (Mania), or in Corpserot Passage, (Dementia).

As in Skyrim, crimes committed in the Shivering Isles don't count towards one's bounty in Cyrodil and vice versa.