So: spherical, like the apartment fire. Lee notices Peter looking around all confused and asks if he's OK. Peter asks how they got there, and Lee's all, "Um, we drove," and the question is another indicator that not everything is quite right, and Peter says he thinks he just had a time jump.
But there's no discussion of that, we just go right to the three of them heading back to the office, with Lee on the phone with the Transit Authority, which tells them that the railroad line was decommissioned. Guess how long ago it was that the last train ran on that track? Yep, four years ago. Peter, leaning in from the backseat -- always a terrible place to be part of a car conversation -- says that's good news, because they finally have the makings of a pattern.
Only as he says "pattern," they jump right back to the railroad crossing, only it's just after they've arrived and are getting out of the vehicle, with Olivia talking about how Boston PD is holding a witness for them and Lincoln saying he's going to check with the CSIs. "This is gonna start getting annoying," mutters Peter.
So while the FBI agents go to work, Peter starts waving his Science Wand over the teenagers' SUV. The front end is covered with some sort of ash-like residue and his Science Wand beeps a little more frantically as he waves it over the car. He taps on the bumper and attempts to pull it off -- and a piece breaks off in his hand. "Hey guys, I got something!" he yells, but he's already back in the FBI vehicle with Olivia and Lincoln again, heading back to the office.
He takes a moment to reorient himself again, and then says, "There are heightened levels of neutron radiation at the train crossing," and Olivia wants to know why he didn't tell them that back there, and he alludes to the most recent time jump but glosses over it. "A piece of the bumper just crumbled into my hands. Metal degradation... it's a classic of neutron radiation. We've got to get those kids tested for radiation poisoning," he says, but Lee's not following, so Peter gives a quick science lesson on now neutron radiation doesn't happen in nature but has to be generated by human technology. Olivia asks if this means he doesn't think he's responsible for what's going on. "No, I'm not saying that. I don't know that. But what I am saying is that somebody has to be causing these time events," says Peter.
That would be our cue to find out who it is. We head over to a nice suburban home, where Stephen Root -- who will always remain WNYX's Jimmy James to me -- watches his wife work, absorbed by books and equations on a blackboard in the dining room. She's not too preoccupied to be able to ask "Raymond" if he remembered to change the date on his dentist's appointment and take his cholesterol pill, and he -- checking his watch to see a countdown timer tick off with forty-five seconds remaining -- smilingly says that she doesn't need to remind him of things anymore, because he's turned over a new leaf. "Is that right? After thirty years?" she says, teasingly. He asks what he'd do without her, and this will turn out to not have been asked entirely rhetorically.