Some more observations about Partridge's death scene...
1. The GPS trackers - People mentioned Bertram being the closest GPS. I think the main point is that Partridges phone was the only one at that address. Yes someone could have known their phone was tapped, but if we take it at face value, none of the 6 killed Partridge, and it may not have been RJ that killed him. Especially since their was not smiley face on the wall. Is RJ all of a sudden changing his signature?
2. "Maybe Brett faked his death and is RJ" - After he "died," Lisbon stared at him for a good few seconds and even though she took her hands off him quickly, in her experience, she had to know he was dead when she finally looked away from him.
3. "She was clearly pulled from beneath, it must have been Brett." - It seems to me she was grabbed from behind. Also, as someone else noted, her looking at the open bathroom door proves someone else was in the room (the door was closed when she found Partridge).
4. I don't think RJ killed Partridge because the other person in the room was not one of the 6 suspects (though I allow the possibility someone left their phone at home...but I also can't see Gale hiding in a bathroom like that...). I also believe Kirkland is dead, though I grant some could use this as more evidence in the Bob/Mike Kirkland theories.
5. Interesting note, when Jane is calling Lisbon from his car, there are three red dots (lights?) in the window behind him. Probably nothing but really sticks out.
6. Haffner still makes the most sense since he is the only one that fits Rosalinds physical description on hair and posture. I dont rule out the others, but I think the easiest to rule out is Partridge and my next rule-out would be Bertram (since he seems to not match anything said by anyone about RJ..to me atleast).
No offense to Partridge or Mashburn fans, I know how riled up you guys get...