Alright, the letters sound nonsensical, but they mean something to someone. And I suppose that you're right, the opponents might then be against Mayor Caligin, in which case he's being targeted. But something is still not lining up.

Yes, the murder investigation. Doctor Resarci, if I may, are you accustomed to performing investigations, having lived in this idealistic town? When the note about the poisoning came, you ended up relying on us, the new residents, to solve the riddle. You've been charged with assisting in the murder investigation, yet the Sheriff is concerned with how long it is taking you to gather evidence. When I came to you just now with a message that you didn't deny was about you, you didn't ask where or who I got it from.