So, some time later, the Fringers are awaiting the return of either Me or Alistair, with an agitated Walter looking out the window. He wants to go home now, and Olivia seems to agree -- it's not like they can't just have some bottom-of-the-command-chain agents stake the place out. Walter quietly asks Olivia if he might ride with her. "I can't drive home with him. I can't look at him," he says.

Olivia tells him that he can't keep doing this, because Peter knows that something's upsetting him. Walter explains that he's written a letter, because it explains everything in just the right words instead of him "stammering in fits and starts." The only problem is that whenever he thinks about telling Peter, he envisions his son's reaction, over and over again. "And every time, the outcome is terrible. But I will do it. But first... there's something I'm waiting for, Agent Dunham. Something important." Your Amazon.com order?

Before Walter can explain, Peter strolls up with round metal parts. "They're what you'd use to cast machine parts, but these look like they were handmade," he says. Walter, examining them, notes one is dated several months ago, and another one even earlier. Surely it'd be odder if they were dated yesterday? "He refers to them as prototypes," says Walter. "But prototypes for what?" asks Peter.

Elsewhere, in a machine shop, Peck appears to be grinding one of the parts. And once it's done to his satisfaction, he unbuttons his shirt and -- we get a glimpse of his scarred torso that resembles burnt cheese covering a horrific collection of metallic wiring and coals. Poor Peter Weller -- typecast as a cyborg!

Over at MIT, Prof. Carol Bryce, in her office, tells Olivia and Peter that Peck was a professor there for six years. "His focus -- obsession -- was particle acceleration. Um, creating wormholes without a particle collider," she says. See, this is why Olivia brings Peter along: to translate: "You're saying that Dr. Peck's area of expertise was time travel?" he says. "He kept cranking out theories, and eventually every one of them was over our heads," she says. Olivia says that must have been "frustrating" for his superiors, and Bryce amends that to "embarrassing," telling them that Alistair was in danger of being fired, but he saved everyone the trouble and left about a year ago.

Olivia hands over the photo of Peck with the woman and asks Bryce if it's Peck's wife. "Ah, the fiancée. Her name is Arlette," says Bryce, who doesn't remember her last name. Peter asks if Bryce knows any other friends or people Peck knew. "That's the sad thing. He was kind to everyone, but he never socialized. I think I was his only friend," says Bryce. Well, you and the fiancée.