I think that the note that was sent to the guy in the city was Bae and there’s someone on the inside that knows what’s going on. I’m thinking that It’s August that sent it.
I also think it was Bae in the city, but I’m beginning to suspect that Jefferson sent the note. Did anyone else notice that on the wall of the city apartment there was a sign that said “Hatter”? Sounds like a clue to me!