I just figured out something from re-watching the second episode. When Patrick Jane wipes the blood off Lisbon's face, I believe he's doing it so he can have the blood tested to see if it matches up with Brett Partridge's, since it's supposed to be *his* blood on her face. He's going to find out that the blood is *not* a match, and from that fact, he's going to know that Partridge is still alive (and most likely Red John)