On the train, Colby keeps his back to Carter as he pulls out the cell phone. There aren't any messages. Colby starts to type, "Where are --" again. Carter rubs his wounded head. Hey, how come the FBI hasn't noted that that MP had his cell phone stolen? Why aren't they trying to reconfooble the energymotron…or whatever?
Charlie, Amita, and Larry do more mathmobabble until Charlie gets a call on his cell. From Colby. Colby needs to talk to Don. "Why call me?" Charlie asks coldly. Because the FBI doesn't have enough time to trace him through Charlie's phone. Colby pleads with him to "think like a mathematician" and asks if there's any reason for him not to give the phone to Don. "Uh, no," Charlie agrees, and shuffles over to Don, holds out the phone, and says, "It's Colby." Don hangs up his phone and takes Charlie's: "What -- you calling my brother? Is this a threat?" Don demands. Colby explains that his handler is Agent Michael Kirkland of Counterintelligence in D.C. "Your handler?" Don repeats. Colby explains, "Look, when Dwayne first came to me back at Quantico, I reported it. Kirkland has been using me to feed cherry-picked information through Dwayne to the Chinese because he's sure that Carter's working for someone high up at the DOJ." David makes hand motions and looks at his watch as he attempts to trace the call. Don asks who the DOJ VIP is. Colby doesn't know because they haven't flushed him out yet. When Carter got busted, Kirkland thought Colby should get thrown in jail with him, in order for them to break out together, in the hopes that Carter would lead him to the DOJ bigwig. Problem is, Colby can't get a hold of Kirkland, and he doesn't know if something happened to him or if he's being set up or what. Don wants to know if anyone else can verify Colby's story. Just the ranking guard on the transport, because Kirkland kept the entire op very contained. Don bitches that he's giving him a story he can't even check. "I'm giving you Kirkland, Don!" Colby shoots back, and says he knows Don doesn't trust him but what Don has to understand is that Colby trusts him. "In fact, you're the only person I can trust right now," Colby says, and hangs up. Yeah, um, how is Colby's phone working on the subway? Because mine never works on BART. We got a few shots of Carter during that conversation, but it's not clear if he could tell Colby was on the phone, because Colby is sure acting shifty as he puts that phone away.
Don, Megan, and David go over Colby's story. Megan got confirmation from D.C. that there is a Kirkland in CI, and he has been in North Hollywood for the last six weeks. David scoffs that Colby could have sold that name to the Chinese. Don sends Megan and David to talk to Kirkland, but orders them to keep it amongst themselves. David wonders aloud that they aren't going to report contact with an escaped convict. Don just wants to figure out what Colby has to gain by contacting them. "Because you think he could be telling the truth," Megan states. Charlie, feeling he's been too long left out of the action, asks if any of them knows about trust metrics. Megan does, because it's used in psychology to measure how much a member of a group is trusted by other members. David blusters, "We can't trust anything Colby says!" Charlie says, "It's not an either-or proposition if we employ a fuzzy system." Your hair's a fuzzy system. Charlie jams his hand into Megan's glass of iced tea and grabbles out the ice cubes. The guy has just no sense of social niceties, does he? He slammed Edgerton's fiber muffin on the ground, he poured water all over Megan's popcorn lunch when she was eating for two, and now this? Charlie, is there any harm in, I don't know, asking before you contaminate people's food? Just so you all know, not all mathematicians are that uncouth or socially stunted.