First of all Kirkland is not RJ for the simple reason that when he shook hands with PJ, Lorelei was in PRISON and didnt know that(i believe though that kirkland is one of Rj's friends in the FBI).I believe Bret Stiles knows many things about RJ(maybe one of his best friends but he is not RJ) and he will be the one who will help PJ with his list in S5(either to help RJ or PJ)I really cant understand which side he is.Before the last episode i was more convinced in the Partridge theory but when PJ talks with the priest at the elevator gives us to understand that RJ must be at least 40 years old...The theory about van pelt is just ridiculous i believe...I also disagree with the theory that PJ is RJ