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Jaconda, a clue to the murderer - Jules Brune.
What do you think, why was the victim found in the wealthy district?
Added 2 minutes ago
And what could the newspaper's name mean? Does it even mean anything? I reviewed the set and the newspaper again, but I still don't understand.
Added 2 minutes ago
I got it! Autumn Leaves - the death of Simon.
1. He was a nobleman.
2. He was killed by a nobleman and could have been involved in the mafia.
3. He could have been part of a cult.
I like option 2 more and I want to believe that it is correct.