Where's Peter, anyway? He's in some diner, hugging a woman who says she wasn't sure he'd be there. "That makes two of us," he says. They sit down at a table. He tells this "Tess" that she looks good, and she tells him he looks older. When he tells her his father said he thought Peter would be fatter, she's surprised to learn that he sees his father now. Peter calls it a "long story." But let's get down to it: Tess says if she can find him, then they can find him. Peter says he knows. "They'll hurt you," says Tess, which seems to me to be something that he would likewise already know. He ignores this and asks if he can get her a cup of coffee or something to eat. So she starts crabbing about how nothing ever changes with him, and he plays it "fast and loose until it's too late," like HOW NICE TO SEE YOU AGAIN, TESS. She says, "I mean, it was easy enough for you to leave the first time. Why should it be any different now, right?" Peter says she has to trust him that it was harder than she thinks. She's all, "Trust you? I'm not sure I ever even knew you" and Peter says she did, better than anyone, and he takes her hand, looking all tender, and at this point I'm mainlining caffeine just to keep my eyes open, and she tells him he needs to leave Boston and never come back, ever. "Is that what you want me to do?" asks Peter. She starts to pull back, and he holds her wrist. She winces, and he looks at her wrist, which is badly bruised with what's clearly finger marks. "Michael?" says Peter. "Things have changed," she says, and Peter says, "Yeah, apparently." "It'll be worse for you if you stay," she says, and she gets up and stomps out of the diner. Peter stays there. I came all the way downtown for this?
Back at the lab, Walter's set up an old film projector because they're going to be watching movies instead of doing any work! This movie stars Walter himself examining some guy, as Walter at Harvard drones on about "psycho-physiologic effect, otherwise known as psychosomatic," which is the ability of the mind to cause actual physical changes in the body. And since Peter's not there, I guess Astrid is the Deputy Agent in Charge of Explaining Walter's Explanations in Layman's Terms, and she calls it "mind over matter," like when you get scared and get goosebumps, and Walter says "precisely!" and Peter better watch himself, because without his explaining duties, all he really brings to the team is three day's growth of beard.