"No, you stay away from me. I'll scream, and everybody will know that you're KGB." ― Martha to GabrielThe Rat is the sixth episode of Season Four of The Americans on FX, and the forty-fifth episode overall.
Martha must finally face the truth she has denied – and her life may never be the same. Plus, a chilling new development in William’s work forces the Jennings to face the realities of what a biological war would mean.
|At home in bed, Elizabeth comforts Philip and reassures him that Martha is going to be OK. In her apartment, Martha takes and Valium, puts her gun in her purse and leaves for work. At the FBI, Stan and Agent Aderholt review Martha's file, commenting that she's led a lonely life and was involved with Chris Amador, who was killed. Philip meets with William and asks for another pathogen sample. After some convincing, William says he can get Tularemia. Martha arrives at work where Aderholt smiles at her. Philip tells him about Martha's situation. Sharing that he'd like to get Martha out but The Center doesn't want him to, William comments that their bosses don't know what they're doing and hopes Philip has figured that out.
|"Clark" picks Martha up in a car as she walks home, and says he thinks the FBI knows about her. Bringing to her to a safe house, she's panicky and doesn't understand what's happening. Gabriel arrives and in private, expresses his displeasure that Philip is forcing Martha's exfiltration. He tells Philip to return her to work but he refuses. Philip remains insistent and tells Gabriel that Martha has seen his true appearance. Knowing that if the FBI arrests her and she breaks under interrogation he'll be identified, Gabriel scolds Philip heavily. Philip tells him Martha is done and removes his Clark disguise. Elizabeth arrives, disguised as "Jennifer", having brought Martha a change of clothes and a toothbrush. Martha is shocked to to learn she's part of what "Clark" does. Elizabeth in turn is shocked to find that Martha's seen Philip's true appearance.
|Offering to stay, Philip tells Elizabeth to go home. Elizabeth makes a Korean dish she learned from Young-Hee for Paige and Henry. In a bedroom at the safe house, Martha asks if "Clark" is involved with "Jennifer" which he somewhat denies. He's confesses they work for the KGB. Martha begins to cry, but eventually tells him it doesn't matter, as long as they're together. She proposes they leave together and they have sex. When Martha calls into work sick, Stan and Aderholt call her but get her answering machine. Having breakfast at the safe house, Martha unsuccessfully asks if things can go back to the way they were and realizes she's never going home again. Stan and Aderholt have Martha's super let them into her apartment and find it empty.
|At the safe house, Gabriel tells Philip there's been an emergency signal from William. Gabriel has to convince him to leave Martha and entering the bedroom to tell her he's stepping out, he finds her asleep and can't wake her. He goes through her purse and removes her pistol. After the super at "Clark's" apartment lets them in, they find no photos, no answering machine tapes and ask the super to see the lease. At the Rezidentura, Oleg tells Tatiana about the depression his mother, Yelena, is suffering since his brother's funeral. Arkady gives them instructions to plan Martha's exfiltration to Moscow. At the FBI, Agent Brooks tells Stan and Aderholt that they've found two "Clark Westerfelds" and that one living in Atlanta is a suspect. Stan asks Brooks to have all FBI offices check for Clark Westerfeld death certificates.
|Aderholt and Stan approach Agent Gaad and share their suspicions and surveillance results. Gaad is aghast and commenting that Martha's worked there ten years, says it's crazy. With Elizabeth and Hans serving as lookouts, William meets a disguised Philip at a shipyard. Passing him a dead rat in a jar, he indicates the Soviets will be able to extract Tularemia from a tissue sample. When he learns Philip brought Martha in, he's pleased. He recalls that when the wife the KGB initially had with him in the US was sent back to the USSR, he didn't protest but wish he had. When Martha wakes and finds "Clark" gone, she panics and runs out of the house, screaming in the street that if Gabriel comes near her, she'll let everybody know he's KGB. Gabriel lets her walk away.
- Martha watches a Today Show report by Jane Pauley before leaving for work. Later at the safe house, she has an episode of Happy Days on the TV.
- "Previously on The Americans" voice: Elizabeth.