Nancy says she can't -- and then she hears Harass say, "Yeah, I'll take care of it. There won't even be a trace." She stares at him, and he starts to stutter and then sway -- he drops his cellphone, and the next thing you know he goes up in flames like a Christmas tree in July. He explodes, with enough force to shatter the glass in the isolation room, so it's a good thing Olivia and Nancy ducked and covered. Olivia comforts Nancy, and manages not to look too happy that she doesn't have to do the psych evaluation now.

And sometime later, Peter and Walter are eating in a diner, with Walter slurping every last drop out of his glass to the point that Peter has to tell him to stop. Then he goes to the washroom while furthering the humiliation by asking the waitress to make sure his dad doesn't leave.

After he's gone, a troubled-looking Olivia comes in and sits down with Walter. After asking where Peter is, she gets right to it: "What the hell did you people do to us?" She takes out a folder and starts pulling out pictures to show him. "You and William Bell, Walter. What did you do to me?" She says Susan Pratt and Nancy Lewis are from Jacksonville, Florida, just like Nick Lane, who he conducted drug trials on, like he did Olivia. A stunned Walter can barely speak. "They were Belly's. They were his trials," he rasps. But you were there and you knew, she says. Not gently. Angry and scared and tired, and getting angrier. Walter, getting increasingly agitated, says they were trying to prepare them: "Something terrible is coming," he says. What? asks Olivia. "I don't know," says Walter, getting more and more distraught. She asks again what he and Bell did to them, and again he says that he doesn't know. "Dammit, Walter, you do!" she snaps. And he's crying, saying he doesn't remember, and he's sorry. Well, now you made Walter cry, Olivia. Hope you're proud of yourself. She gathers up her documents, looks at Walter with pity or disgust, and leaves, Walter blubbering at the table. Right after she's gone, Peter comes back. Was Peter missing Olivia completely coincidental (and just written that way so Olivia could badger Walter without Peter stepping in?) or was this some kind of teleporting Olivia thing? Peter asks Walter what happened, but Walter's too torn up to answer. He just clutches his son's hand. I've watched this scene a couple of times, and John Noble's portrayal of anguish made me tear up both times. He's goooood.