And, back at Castle, he's still upset about it. Sarah tells him that nothing's changed. Casey's new team is just the competition, and they have to earn their title as A team. She says they're going to find Dragan and earn their status back. Chuck says the only problem is they don't know where they're keeping the Turk, who can lead them to Dragan. Then we hear the yap yap yap of a rat dog. Dead giveaway. Chuck worries maybe she has another upset tummy, but Sarah's worried about one thing only: getting behind Casey's secret door, where the yapping is coming from. Chuck: "All we gotta do is get through four inches of solid steel." Sarah: "Or we chop off Casey's hand." Chuck thinks they should keep that as their backup plan.
Chuck's banging on the door at Morgan and Casey's, telling Morgan he can hear him eating potato chips. Morgan refuses to answer the door, despite Chuck's protests. Morgan swears it's for Chuck's own good, but Chuck thinks that's just what Casey told Morgan to say. Sarah comes in through the ceiling with a tranq gun trained on Morgan and shoots him with it. She and Chuck go to work looking for a Casey handprint in the apartment. They use special goggles and flashlights to find a handprint. Sarah finds a bunch of child-sized handprints (Morgan's), and then Chuck finds the full man hand on the Reagan portrait. Perfect! Cut to them using a print of it to get the steel door open. Sarah: "Not bad for the B team."
Inside the secret room, Chuck's offended at how much cooler their Castle is than his. Sarah works to pull up Dragan's case file as Chuck looks for the Turk. He finds him quickly, with his yappy dog in his arms. He begs Chuck to leave him alone, since he's already told them everything about Dragan's shipment. Chuck tells him to relax; he's not part of their team. The Turk says they're like a pair of evil robots, then he says they told him about Chuck, too: the dog walker. He's glad he's here, because Jana needs, "how you say? Peepee time." Sarah manages to open some secret room inside the secret room, and calls Chuck in to look at something. It's his dad's laptop hooked up to some giant computer. Chuck wonders why, then it dawns on him, and he prays he's wrong about this. Sarah thinks it's time for them to get the hell out. But the Gretas come in and say they're not authorized to be in this section of Castle. Chuck asks what they're doing with his father's computer, and Stacy Greta says she's sorry, but the Intersect Project is classified. Chuck's all, "Classified? WTFuck? I AM the Intersect!" Isaiah Greta tells him he's not as special as he thinks, and Stacy Greta tells him to get out of here before he gets hurt. He flashes and fights each Greta, one at a time. He realizes they're also Intersects, following the same program.