I think about it when i first saw s03 finale but now its make more sense to me.

at the finale of season 3 and the motel trick the killer go to Bertram's room and jane thought it because she want to jump to the real mole.
but it's not make sense.

How did RJ know its was a setup? Because he has at least 2 moles in this little game.
How did RJ know about the mall? Because of Bertram!
he knew its a setup, so he made jane to think its bertram and give GVP boyfriend the chance to kill Hightower and after that he can keep Bertram as a mole (and high priority one), because jane think he reveal the mole.

but what is the real interesting thing about the motel trick is that all the male char in laroche's list are in the 30 suspect list. and i think laroche kill this indian man that try to get list for RJ as a favor to RJ, because he take the tongue of the rapist.

i just say that season 3 finale give us a lot of clues about whats going on.

and sorry about my english:)