One more prediction: Red John does not have the tattoo Jane is looking for and Jane knows it.

There is absolutely no evidence that the PI hired to spy ever met RJ or was killed personally by him. To make that assumption is totally irresponsible. Jane knows that, but he also knows it's the perfect time to come unhinged with that assumption.

He also knows that Lisbon's phone is bugged and tracked.

All he needs to do is tell her his theory, and RJ will have the opening to an endgame he can't refuse.

Everything Jane tells Lisbon from this point on are things Jane wants RJ to hear and believe--even that he'll bring Lisbon with her. Then he waits until the last second, ditches her in the middle of nowhere, and takes her phone. RJ now has no idea where she is, other than that her phone shows him to still be with Jane.

In other words, she's safe for a window of time.

In the meantime, Jane has made it abundantly clear that he is looking for a tattoo of 3 dots. If such a tattoo exists on RJ, it's easy enough to cover up at this point. What Jane knows is that the person (or as it turns out people) who has/have the tattoo are willing to die for RJ. Anyone with the tattoo RJ is willing to lose. Anyone without, he is not.

So 3 guys show up with the tattoo, making it seem like that's the mark of the RJ club, but Jane knows it isn't because he's seen every inch of Loralei and she doesn't have the tattoo. Plus he's seen the bodies of other co-conspirators who died, and they don't have tattoos either.

So it's not a club mark. It's a mark RJ placed on 3 dudes as he plays into Jane's hands.