Murder In Space
I found this article about a 1970s murder committed on a huge iceberg floating in the Atlantic fascinating in a "What If" kind of way. Not just how would you try someone for a crime committed in space but what about in a climate ravaged world? Floating eco-city on an ocean? Underwater colonies looking for protection from the heat and weird weather?
One of my After Oil stories was about a court case and how the justice system would change in a collapsing world. How else could you do a good story with such a problem?