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Hmm, I took another look at the roles, and I still don't understand what Revan was doing near Ama's window.
It was most likely a guard who visited Neyra, because only he goes around with a crowd, and it was the second time.
A deputy or the head of the Illuminati visited Cash.
The doctor visited Revan and resurrected him.
So, Revan can't be the doctor, the guard, or one of the pair: GI and Deputy, but he can be someone else from that same pair, or he could be a mafia member who went to kill Ama, so the chances are 50/50. Although GI is also a mafia member, which means the chances that Revan is mafia are even higher.
This is just some information to consider, especially for the doctor.
P.S. I didn't write about the inventor because it was most likely Siv, and he also stays at home; only his bot walks around the street, and the bot couldn't have broken into Neyra's or pretended to be a merchant to ransack Cash's house.
Added after 2 minutes:
Oh well, now I'm afraid for my life. But if I die, it will be for a good cause!