Walter's humming a tune as he affixes his brain-tampering headgear to Olivia (who is still William Bell). Apparently they're playing "Name That Tune" but it seems to be the worst game of Name That Tune ever because Walter can't hum and Bell doesn't even know the right names of well-known songs like "The Girl From Ipanema" which isn't even the song Walter's humming anyway. It seems this has been going on a while, because Bell wants Walter to "try something else" and Walter says Bell is taking all the fun out of it, which hardly seems possible, as it looks like everyone is having a shitload of fun.
Walter checks with Peter to make sure the temperature is correct (64 degrees) and then with "Astro" to see if she's ready. Astrid has apparently decided to fight absentminded-professor fire with fire, and shoots back with, "Just about, Wally," which actually startles him.
Peter wants to make sure this is safe, and Walter says, "Perfectly. If everything goes according to plan, the electrical current will latch onto the dominant consciousness which is Belly's and coax it into its new residence." That's great, because things always go according to plan here, right? Saying "If everything goes according to plan" on Fringe means exactly what "Barring some unforeseen circumstances" did on Seinfeld: it meant shit is about to go down.
The "new residence" that Walter is talking about is the corpse -- being kept cool by hundreds of ice cubes -- laid out on a slab near Peter, who is still all grouchy with his arms crossed because he wants to know if this will be safe for Olivia. "No offence," he says to Bell, who takes none. Walter says Olivia's mind is still peacefully at rest and won't be aware of any of this. But he still wants everyone to take a few steps back. This doesn't exactly fill Peter with confidence, but maybe he just means that Bell's been eating a lot of cheese today.
Anyway, Walter asks Belly if he's ready, and Belly responds with a chipper "Aye aye, captain," because these two guys are still having the time of their lives, and Astrid flips the switch or pushes the button or whatever and then the corpse wriggles and writhes and ripples, partly because of the electrical current but also because this guy clearly wasn't a prime physical specimen even when he was alive. Then there is crackling and popping and the lights go out, but the corpse has not been reanimated, and Bell is still inside Olivia, still not in the way Peter wants to be.
Walter tells Astrid to reset the circuit breakers and to tell the medical school that they're returning Mr. Spencer. He snaps the last bit at the dead body itself, like he's blaming the corpse for the fact the experiment didn't work. Mr. Spenser does not respond, which I suppose is pretty much the entire problem. Astrid at least has the consideration of whispering a "sorry" to Peter, who continues to glare.
Later, Bell is washing his hands in the sink when Peter stomps up and demands to know what they do now. "I guess we try and find another brain-dead host," says Bell. The good news is that summer-blockbuster season is just around the corner, so that shouldn't be too hard. But Peter wants to know why he thinks it will go any better this time around, since the other body fit all of Bell's parameters, and they were lucky to find him in the first place. "I have a new idea. You said that if you didn't find a suitable host in forty-eight hours that you would just go away," says Peter. Bell stares at him. "Are you suggesting that I die?" he asks, and Peter just smirks. In fairness to Peter, Bell did say that. "I'm suggesting that I want Olivia back," says Peter, and then another light bulb shatters and Peter says "And I'm losing patience," and then Bell looks terrified and for a moment it seemed like Peter was about to go all Carrie all over this place, but then it's Olivia saying, "Peter, help me!" and then she collapses.
So 911 gets called and the paramedics are wheeling Bellivia down the hospital corridor, with one of them telling the doctor that she's had no response to four milligrams of Lorazepam, and the ER doctor wants to know how long she's been seizing, and the paramedic says twenty minutes which Peter corrects to twenty-five, so the doctor wants to start her on a Phenytoin drip. Walter says that's wrong, and the doctor and the nurse take exception, instead of what you'd like to think they'd do when a person is dying right in front of them, which is just actually ignore the Bishops, but Walter presses on and says Bell can't tolerate Phenytoin, because he's anemic. No matter, because Bell's crashing now so the doctor's getting the defibrillator ready, at 360. Walter fears that's too much, but Peter tells him to just let them do their job. "What if his consciousness changed her physiology? A charge that size directly into her heart..." Walter asks Peter, but Peter says the doctors have to do something. The doctor's about to go ahead with the defibrillation when Bell grabs his wrist. "Doctor, I've been jolted once today. If you do it again, you will kill me and the young woman I'm living inside of," he says. Does the doctor have anything to cure the creepy old man voice coming out of the young woman? Because that would at least be a start.
Well, whatever they did, Bell is resting up by the time the opening credits are over, only now he has to face an angry Broyles, who says Bell told him Olivia was perfectly safe. "And I believed that she was. With the rats, it was nearly two weeks before I began to see any complications," says Bell, and probably the only thing preventing Bell from being punched to death by Peter for that sort of unscientific conclusion-leaping is that he's in Olivia's body. And Broyles is all "What rats?" and Bell starts blathering about the rats he first did soooooul magnet experiments on thirty years ago, who went nearly two weeks before the host's consciousness got lost. "I never anticipated that it would happen more quickly in a human," he says. Humans being exactly the same as rats, after all. So now Broyles is all, "what do you mean 'consciousness got lost'?" Yeah, that can't be as ominous as it sounds, right?
"It seems that at a certain point the brain can no longer accommodate two people's consciousness. So one just went away. And no matter how hard I tried, I was unable to retrieve it," says Bell. Yeah, that's pretty much exactly as bad as it sounds. Peter doesn't exactly look thrilled. Broyles reminds Bell of his forty-eight hours promise, and Bell's all, "Yeah, Peter has already put forth his 'just go die already, old man' proposal" but he says that he can no longer simply leave. Peter asks why not, but Walter's already figured out the answer: "Because at this point, your consciousness is the only thing keeping Olivia's body alive." Presumably fed up with Bell by this point, Peter asks Walter how long before Olivia's gone for good, but Bell answers anyway: "I don't know exactly, but based on what we've seen thus far, I would say, no more than a day." Worse news: you've been wrong before, Bell.
So back at the Harvard lab, Bell and Walter are putting their senile, drug-addled minds towards pulling Olivia's consciousness back out. Bell suggests activating her chi, which is kind of hilarious. Yeah, just go under Olivia's system preferences and slide the "chi" switch to "on." Walter dismisses it because it would take dozens of sessions spread over several days, much longer than the twenty-four hours Bell now thinks they have. But Bell's got another idea: "What if, instead of trying to find a way to pull Olivia out, we try and find a way to go in?"
Meanwhile, Peter and Astrid are discussing the situation, and Peter has floated the possibility that Bell would let Olivia die just to go on living. He's not entirely sure, but still: "On the list of accomplishments for William Bell, cheating death would certainly rank No. 1." Astrid's skeptical but considers it nonetheless.
The scientists come back in (Bell cutely, coming from Olivia's