I think that the theory which mentioned below is can be right. Lisbon isn't dead, of course, but the painted smiley on her face can point on the body of dead Partridge, like all of the smileys does.

I think Partridge isn't dead either, but I'm quite sure that he isn't RJ himself but one of his followers. but there's something in that room which Lisbon saw that maybe important. i don't know what, there were only the sink and a yellow curtain (I think), but it seems strange that we have actually shown what is in the room. we could have been satisfied with just noise that made Lisbon stop watching Partridge for a second.

There are few thing I'm sure about after this episode:
1. There us a mole inside Lisbon's team, and it isn't her.
2. Jane knows more than he told to Lisbon, and more than we saw. He smiled when he saw that someone broke into his room. It's because he predicted it and prepared himself for that and also arranged the RJ's board with the leads just like he wanted whoever broke in to see.
3. Lisbon painted face tells us something. It's not the usual smiley face mark, it seems to be more like a clown (because of the eyes). Maybe a connection to Jane's past at the carny?

* I'm truly sorry for my english.