Aight guys my theory:
We've waited all almost 6 Years to this moment, come on heller is for sure doing a great thing to entertain us so stop saying partridge is not dead or something like this, this would be a MISERABLE ending.
Let's look closer to the details.
I also recognized the coffee thing. Ray got black coffee when he met Teresa and in this scene you have to look closer at Teresa. When the coffee was served she takes a look to the bar or to some people out there. I'm sure the coffee thing is very important here but i can't tell what exactly.
I'm also almost a 100% sure that RJ has NOTHING to do with the tyger tyger group which has the three dots and the tyger tyger password, except that he knows them. Maybe RJ just want's to fool Patrick here and want's to lead him to a false trace which would explain the scene when RJ saved Jane from the kids and ended his act with the poem tyger tyger.
Michael Kirkland will show up for sure. The tyger tyger group will be excluded from the suspects. (McAllister, Smith and Bertram). So there are 2 possibilities here: Ray Heffner or Bret Stiles.
I assume it is Ray and i'm as well very sure that this "ecuadorian connection" from Stiles will play a role here.
Cant look forward to the next episode. RJ is not so important anymore. The tyger tyger group will keep the story entertaining, even if RJ is revealed.