Okay, then.
The Guardian was provoking Mirana.
Mirana used her ultimate ability because she has no other special abilities.
The city is blocked by Mirana.
Melissa attempts an unsuccessful recruitment.
Marcus checks Alex.
The Wizard directs the monkey, but there is no move because the city is blocked.
Blud kills Ruddy-Basil (the tools are more like torture devices than medical ones).
The Mafia were either stealing with the Bell or defending/healing Agnet.
Melissa was doing one of her additional special abilities.
Conclusion:
The Guardian knows Mirana.
Melissa knows Kirsu, the Guardian, or the Mafia member protected by a mental shield.
Alex is not Marcus.
Marcus knows whether Alex has magic.
Not much.
Added after 45 seconds
The clue, as for Revan, is very unusual. The killer is a surgeon?