Meanwhile, on the soon-to-depart monorail, an anxious Olivia wants to go back for Peter, since he hasn't shown up yet. Then, just like that, Peter hops onto the train. Olivia wants to know how he got them out of the pocket universe: "How'd you find your way back to the portal?" she asks. Peter says, "I don't know, but I'll take it," instead of "How about we not discuss our fugitive activities on this very crowded mode of transportation?"
She doesn't look satisfied, but everyone takes their seats as the monorail gets moving. Peter sitting down and looking around by moving his head in short jerks. You know, like a bird. An Observer bird.
Meanwhile, Olivia fiddles with the radio, and discovers that the tuning knob is jammed, stuck on one frequency. "Nothing's being transmitted," notes Astrid. "Not yet," says Olivia.
Nearby, Walter, sitting across from Peter, is fretting over Cecil: "All he wanted was to get out of there. And I didn't help him. I didn't care about him," he says. No, all you cared about was saving the world, points out Peter, who can't seem to believe this is even a problem for Walter. Peter says that Cecil died twenty years ago, the night he broke into the apartment and the light bomb went off. "If it wasn't for your pocket, he would have died then and there," he says.
Perhaps, says Walter. But he saw a half-starved man and used him, because it suited him, because he was nothing more than an acceptable loss as long as Walter got what he needed. "Is that who I am, Peter? Is that something you can see coming from my mind? From my heart?" Walter whispers that the person who would leave in the middle of the night on his own is a man of hubris and arrogance: "And that's not me, Peter. It's him."
Peter's confused, but Walter explains he's not safe. "It's my mind. Ever since the pieces of my brain were re-implanted, it's been changing... me... back into the man I was before," he says. Blah blah, John Noble great, etc. etc. I mean, it's not anything we haven't really seen before, and there are only so many times I can be moved. It does, however, provide a nice contrast and comparison to where the Bishop boys are going. Each is worried about losing his humanity; in Peter's case, it's tragically literally so. The reassurance Peter gives his father/alterna-father/whatever is touching, though: "I'm not gonna let that happen. We need you. You are our only hope to defeat the Observers," says Peter, adding that he'll be with Walter every step of the way. Walter pleadingly asks for Peter to not let him go, no matter what happens.