Olivia and Lee make their way in, finding the Professor sitting there. I hope McMurder pushed the eject button on the screen before ejecting and didn't just rip the cord out! Noreen's unconscious on the floor, and Lee checks to find she's got a strong pulse.
They hear a noise coming from a nearby pantry, and Olivia goes to check it out, and finds John, struggling, facing the wall. She tells him to put his hands where she can see them, but he gasps out that he wanted what the professor had, what she gave him. "I took her from him. I shouldn't have. She made him ... feel for them. What have I done to all of them?" he says. Sounds like taking the memory has made him feel for them too. He turns around with a gun and before Olivia can react, it's under his chin and then just like that he's not going to be murdering anybody anymore. At least not in this universe. And then in comes Fauxlivia, gun drawn, like thanks for showing up too late to be any help, Fauxlivia.
And the zeppelin and the Twin Towers are zapped from the shot of the skyline, so we're back in our universe, with Olivia going to visit McClennan at the hospital. Broyles is there because the head of Fringe doesn't have anything better to do than hang out at the hospital to guard the Professor and brief Olivia. "There appears to be no permanent damage to his motor functions or cognitive ability. He is, however, suffering from partial memory loss," says Broyles. Turns out McClennan doesn't recall the events of the past few weeks, including being involved in this case.
As for Margery? "His memories of Margery were extracted. The neurologists believe the loss is permanent," says Broyles. They have a lot of experience with the memory-extracting device built by a madman in an alternate universe, do they? A horrified Olivia points out that for all they know, she was the only think preventing Earth-1's McClennan from ringing up the body count, and Broyles says they'll have to keep an eye on him after he's released.
Anyway, Olivia goes in to talk to him (he was told that he'd been doing some profiling work for the FBI) and she has to introduce herself because he doesn't remember her. He says he's been told he saved a woman's life. "Yes. And probably many more. I came to say thank you," says Olivia, who asks if he remembers Margery, even though she already knows he doesn't. He says no, but "things are pretty dark right now." He asks if she had something to do with the investigation, and Olivia says "sort of" but doesn't offer any further explanation.