I've just finished watching the episode via the source code link. I can confirm all of the promo scenes are in the episode and that bruno hasn't flung us another red herring.
I'm slightly disappointed as there are so many unanswered questions that will probably go unanswered. It was great acting but the RJ reveal is a disappointment. If anyone really wants to know who it is before Sunday throw your email in the questions section.
How do you find this theory?
plausible
unlikely