This is not a Rj theory so there's no suspect, BUT...
Something just hit me and I haven't seen anyone posting about it so I felt it's up to me to bring it up.
I appreciate your comments and views.
Like we all know, Heller said that something in the ending of S06E01 was important.
People have argued about whether it is the 666, pidgeons or the smiley face.
How about what Partridge says?
Or actually not what he says, but who he says it to!
If Tyger Tyger is the password of a secret organisation, choosing those words as your last seems rather stupid if the person you're talking to isn't involved in the organisation (of course it can be simple mumbling, but why would Heller chose those words for that?)
Now, what's interesting is that Lisbon actually seems to respond to the words, and she's clearly confused and thinking about what to do next. She can of course be confused for several reasons, but I think she's somehow involved in the Tyger Tyger organisation, whether it's connected to Red John or not.
Watch this if you don't remember the scene:
http://www.youtube.com/watch?v=w4mhDdZPD-o
