poses as a Swedish Intelligence Officer named Scott Birkeland at a cocktail party. He seduces Celia Gerard a.k.a. Annelise, the wife of an assistant undersecretary in the U.S. Department of Defense. Philip persuades her to take photos of the study in the home of United States Secretary of DefenseCaspar Weinberger, so that the KGB can plant a listening device. Annelise takes the photos in Weinberger's study by strapping a camera to her bra. Later, Philip and Elizabeth develop the photos in a darkroom and notice a clock in the study that can be bugged. Stan Beeman and Chris Amador are watching a stereo store where Nina, a woman working for the Soviet Embassy in Washington, enters and then leaves quickly with a large package. Stan and Chris confront the stereo store owner about her identity, and Chris finds a tin of Beluga caviarbehind the counter. Meanwhile, at the Soviet embassy, two men discuss the upcoming visit to the U.S. by Margaret Thatcher and John Nott, with intelligence that they are visiting Weinberger. Philip and Elizabeth are given three days to return to Weinberger's to plant the bug. Elizabeth, disguised, poisons a young college student named Grayson by injecting him with a needle attached to the end of an umbrella. Philip and Elizabeth go to the college student's house to see his mother, Viola Johnson, Weinberger's maid, and tell her that, if she brings them the clock located in Weinberger's office, they will give her son the antidote. Viola complies, reluctantly, and steals the clock. Philip shows up at her house later, but is attacked by Viola's brother. Philip beats him in their ensuing fight, where he tells Viola to speak of this to nobody. Elizabeth becomes concerned about the success of the mission and how it will affect the children. Philip learns that Viola hasn't set up the clock in the office. Elizabeth goes to Viola's home and tells her that her faith in God will not save her son. Philip comes in and begins to smother Grayson with a pillow, which convinces Viola to finish the job. Stan finds Nina, telling her he knows that she's sending high-priced U.S. stereo equipment back to the Soviet Union; he blackmails her into spying on the Russians for the FBI. The Russians listen to the meeting between Weinberger and Nott, who discuss building a missile shield.
In its original American broadcast, "The Clock" was seen by an estimated 1.97 million household viewers and gained a 0.8 ratings share among adults aged 18–49, according to Nielsen Media Research. The episode dropped four tenths from the pilot episode. Genevieve Koski and Emily VanDerWerff from The A.V. Club gave The Clock an A-, saying "The Americans is far from the first dramatic series to ask its audience to root for an antihero, or even a villain, though it might be the only one to ask us to root for characters who are actively working to destroy the collective “us” of American society." Continuing: "as this week’s episode demonstrates, the answer to why we should root for these characters who are technically the “them” to our “us” becomes much simpler: It’s damn hard not to root for the success of a well-executed caper story."
