If you talked to Bruce and he asked for a drink (because you were choleric at the start), you need to go to your drinks cabinet in your office, then after that back to the map. That should trigger the end cutscene.
Hmmmmm... that's odd, once you have the tattoo location and have spoken to an officer, all you should need to do is go back to the map to trigger the end of the demo. I will look into it, apologies for the bug!
