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There are some inconsistencies in the description of Gil's murder. He was killed with shots that didn't attract anyone's attention. And then, for some reason, the killer decided to set the body on fire, and suddenly everyone noticed the smell of smoke. There are no pyromaniacs mentioned in the description of the characters, so who could it have been?
I'll refrain from commenting on the suspicious behavior because it's a thankless task, and our game isn't psychological; it's about evidence.
As for the delicate citrus scent, bergamot and Kenzo come to mind. But if this is a planted clue pointing to me, then digging in that direction is a no-go, or the wine-lockers will pounce and devour me! ))