Astrid wonders if the killer is trying to win the female. "A love potion? Possibly," says Walter, crunching thoughtfully on what I hope is a potato chip and not, say, a sample of Mr. Hall's lung.
Lee heads out to get the first bodies exhumed so Walter can have a look at them, but he stumbles over Peter's gear as he does so, with Walter apologizing and explaining that he made Peter get off the bus to New York. As clueless as Walter sometimes can be, he's able to read Olivia's shocked reaction immediately: she didn't know he was leaving for New York. The look on Lincoln's face, as he takes this all in, is clearly, "Goddammit, if she's going to be in love with this guy, the least he can do is make her happy."
Peter's on Morrow Street, checking the numbers on identical black doors set in a brick building. The extra-special door-cam shows us 226 and then 228 -- like WE GET HOW STREET ADDRESSES WORK, THANK YOU -- and then there is a door with no number and then there's 230. So Peter goes back to the numberless door and tries the handle. It's open, so he goes inside and finds a long hallway with a couple of doors on opposite sides. He goes to the one with the umbrella stand sitting outside and slowly turns the knob. Inside is a small kitchen furnished with crazy old appliances. There are also old newspapers stacked chest high in one corner, and yellowing clippings tacked to a wall. He opens a closet, where he finds the trademark Observer gear, more than one set.
Back at the lab, Olivia finally gets up the nerve to tell Walter about her vanishing memories. He's surprised, since she told him they were all tucked away in the back or whatever. She says she didn't tell anyone, because when she thought she was going to be with Peter, she wasn't really worried about the consequences. Uh, you're not pregnant with syphilis too, are you? She wants Walter to see if he can reverse what's happening, so she can go back to being who she was. He takes her hands and says her name. "I don't want to feel like this anymore," she says, and he tells her he'll think of something. He goes, leaving Olivia to look at the corpses of the Halls. The husband's arm has shifted so it's hanging off his slab and is just barely touching his wife's hand. There you, go, Olivia! If corpses can find a way to be together, you'll find love!