On their way, they call Astrid's cell phone, and reach her as she's in her car on the way back to the lab. "Where are you and Walter?" Peter asks. Astrid tells him about the errand she's on -- alone -- and Peter tells her to get back toot-sweet. Astrid says she's on her way and whips the car around. I would have liked to see her pull a handbrake turn, but you can't have everything.
Walter sits sweating in his easy chair and gets up to answer the knock on the door that he thinks is coming from Astrid. But of course when he opens it, there's Newton. "Hello, Dr. Bishop," Newton smiles.
After the ads, Astrid is back at the house and has her gun out, but Walter and Newton are long gone, so the only people she can point it at are Peter and Olivia as they arrive, and that's just not the same. Having lost Walter for the second time in as many weeks, Astrid sputters her apologies, and Peter says it isn't her fault. Although Olivia gives her kind of hilarious look that's like, That's two strikes, A-Farn. Luckily, Peter has an idea: "Last week when Walter got lost, he did exactly what you'd expect Walter to do. He implanted a transponder chip into his neck so that if he ever got lost, I could find him." Snagging the little beeping remote from a shelf in the kitchen, he leads the agents back out the front door. Or Olivia, at least. If Astrid were to find Walter, she'd just lose him again.
Curtis from 24 carefully places a metal-and-wire armature over the head of Walter, who is strapped into a barber's chair in that dank basement lab. Walter asks Newton if they know each other. "Oh, we will," Newton Brits. The hench-nurse prepares to inject Walter with a sedative. "I've already had 50 milligrams of Valium," Walter points out. "Then this should be very enjoyable," the hench-nurse says, and gives Walter the shot anyway. Judging by Walter's expression, at least the hench-nurse isn't a liar.