“Airlocks will likely record exactly who opens them and when, for example, mapping everyone’s location down to precise times of day, even to the exact square feet of space they were standing in at a particular moment. Inhabitants’ vital signs, such as elevated heart rates and adrenaline levels, will also likely be recorded by sensors.” It’s not going to be a good idea to try to get away with a crime after we’ve all relocated. But just in case people give it a shot, let’s explore how police will solve murders on Mars?