Awesome calls Ellie to explain that Chuck and the boys kidnapped him for his bachelor party. Casey bumps into him and steals his wallet. No key card. Awesome says he's not tempted by the girls here, because he has her at home. She trusts him, and tells him to have fun. Casey calls Agent Cylon and says no key card yet. She thinks it must be around his neck, and she has a backup plan. She bumps into Sarah, and wonders why she's still there. Sarah's tying up loose ends. Agent Cylon leaves, and Sarah logs on to Castle's super computer. She types "Stephen J. Bartowski" and the computer says "Search initiated."
Agent Cylon walks in to the Buy More in a cop uniform. Jeff actually think she's a real cop, but Morgan says no, this ... is Xanadu. She takes off her jacket and gives them a show on a stripper pole. Casey's totally impressed. As is pretty much everyone else. Lester wants to be the naughty, naughty boy she's heard about. So does Jeff. But Morgan selflessly gives up Awesome. She says she's going to have to strip-search him, and actually handcuffs him and leads him away. She takes him to the screening room and gives him a lap dance. She rips his shirt open and asks him to take his key card off, so nothing comes between them. He tells her he can't, because he'll get fired. She rubs up against him, but he tells her to stop because he loves his fiancée and would never do anything to jeopardize that. Agent Cylon guesses romance is alive and well and living in Burbank. She turns and tranqs him. He falls, and Chuck runs in and yells, "I said 'No tranqing!'" Awesome hears this through a haze, and then hears something about "CIA" before he's totally gone. Casey comes in and congratulates Agent Cylon. Chuck tells Agent Cylon she's gone too far, because Sarah would never have done this. Casey tells him to stop. Chuck says no more of this "49-B" stuff, because from now on he'll only work with Sarah. Agent Cylon says she's been dismissed. Chuck looks at Casey, who I think looks somewhat surprised. Agent Cylon says she's Chuck's new handler.
The next morning (I think?), Sarah's packed everything she has into two tiny suitcases and is leaving her hotel room. Chuck calls, and she declines it. But at least she looks sad about it.
General Redhead is explaining that, with Awesome's key card, Casey planted the bug in the pacemaker. Chuck tries to interrupt, but she tells him to hang on, and asks someone to turn up the volume. Agent Cylon does. We hear a heartbeat, and General Redhead says it's the sound of success. ["Now we know what his heart is doing at all times!" - Z] Chuck keeps trying to interrupt, but all General Redhead gives him is a raised eyebrow and information about the Afghani hideout of Kalid. He finally steps up and says he gets that this is an important mission, but what about Sarah? How can she be gone just like that? Casey says that's the way it is. Chuck says no, that General Redhead should have told him this could happen with a 49-B, because he was just under the impression Agent Cylon was here to evaluate Sarah. Casey whispers that "it's a job, Chuck," but Chuck says for Casey it's a job; for Chuck, it's his life. I would argue that it's also Casey's life, too, since it's all he has (if you're not counting that sad photo or Reagan). General Redhead says they disclosed everything pertinent to Chuck, which is how the NSA operates. Agent Cylon tells Chuck to get used to it, and then says she's going to clean her weapons. Her coping mechanism, apparently.