(I picked Kirkland because he is the creepiest)
RJ isn't any of the 7 suspect, think about it this is a person who framed Jane of murder simply to see what he would do. he wouldn't be this stupid to allow himself to be caught by something as simple as a tattoo.
I think RJ is someone else who has a connection to everyone in the room, He knew about the existence of Tiger Tiger group for some time and his use of the poem is used to draw Jane in. He want Jane to learn about this group similar with the Fake Red John he want to know how Jane will re-act what he will do.
to this extent he hired the investigator or she worked for him, knowing that they would find the bug and Jane would suspect him. Tiger Tiger group would also suspect him and try kill her before anyone could find out.
there is also the Visualize connection we know RJ was connect to the cult in some way.
Bret Stiles big part of this week ep was his speech about taking someone under his wing and grooming them for greatness. we also know that he is close to death my theory based on this interaction is that RJ was once one of his star student someone he groomed, mentored (not in term of killing). This could explain RJ God-like status among his followers much like Stalis.
The 5 main suspect are
3 Tiger Tiger members
2 Visualize members (Founder and his Successor) (Haffner is the Successor of Stalis)
What I'm thinking is
he wants Jane to leap down the rabbit hole and chase the tiger, there is a connection between Visualize and the group. This connection is important to RJ and he want Jane to find it.
