Plot

Lack of progress in the investigation is frustrating Carolyn. Eve searches for a clue to Villanelle's whereabouts. Villanelle and Dasha team together for a kill. Konstantin is crumbling under pressure.

Villanelle is sitting in a hall filled with armor and weapons. Helene opens a door. Villanelle says one suit of armor was staring at her. They enter another room full of armor and weapons. Helene introduces a young woman named Rhian. Helene feels Villanelle's tender injury through her sleeve, hurting her, hugs her, and says she loves Villanelle because she loves chaos. Villanelle tears up. Helene says that in order to be a truly beautiful monster, she has to feel she is not alone, and should get everything off her chest. Villanelle says she did something bad to her mother. She asks for another job. Helene says she's injured and maybe Rhian should go. Villanelle says she'll take Dasha.

In a restaurant, Carolyn looks over surveillance of Paul with Mo, who, in a week, has found nothing tracing Paul to the Twelve. She says Mo isn't finding proof that she is sure is there and sends him off. Eve approaches her and tells her that Dasha told her Villanelle has been promoted. She asks what Carolyn told Villanelle in the prison. Carolyn says she offered her work and she refused. Carolyn denigrates Eve's focus on Villanelle and leaves.

Detention Center, Moscow: Konstantin watches Irina and several adults through a window. Irina is taken away. One of the adults says Irina is bright but manipulative, devoid of empathy; she said she only wished she could have run over her mother's boyfriend again. Konstantin offers the man a bribe, to no avail. He says Irina isn't going anywhere for some time. Konstantin gets mad and clutches his heart, as he has in previous episodes.

Approaching the Bitter Pill offices, Bear finds Eve going through a dumpster. She's looking for the box her birthday cake came in so she can trace the bakery, and she finds it.

The office is in a shambles. Most of the equipment is gone. Jaime says the police had a warrant and raided the place, looking for collusion with criminals like the dark web. Bear uses his laptop to look up the bakery in North London.

In a visiting area, Irina gleefully shows Konstantin a shank someone gave her. He grabs it and says don't take anything from anyone. He's mad that her being stupid kept them there. He says he's leaving her there for a couple of days while he has to go to London. She says he's a liar.

Bear has traced the bakery's calls. One was from Barcelona, Dasha's base. Eve asks him to trace activity on the credit card. It was just used in Aberdeen.

Aberdeen, Scotland: Villanelle and Dasha are in a hotel lobby. Dasha objects to Villanelle's German outfit, says Germans don't wear kilts. They continue to bicker. Dasha says Villanelle hasn't won with her promotion; she has, because she's done everything they asked of her ever since they dumped Villanelle on her when she was younger, and now she gets to go home, where, she reveals, she has a son.

Konstantin enters his apartment and is startled by Geraldine waiting in the dark. She thought it would be a nice surprise. He doesn't think so. After some bickering, he admits he used her to spy on her mother and she leaves in anger.

Villanelle and Dasha are golfing. Dasha says she's going to miss killing people. They continue bickering. Villanelle dares Dasha to kill the loud American in another foursome.

Eve is in a cab with a talkative driver. She calls Bear and confirms that she's in the right place, that Castle Stuart is the last place where the card was used.

Villanelle has hit the ball into the woods. Villanelle asks the loud American to help her get her ball. He tells his friends he'll catch up with them. She tells Dasha the deal's off--she's doing this one. Dasha pushes the ball where it can't be seen. Villanelle tosses a ball from her pocket. The man bends down to fetch it. Villanelle prepares to hit him with her club. He gets up with the ball and Villanelle hits Dasha with her club. Dasha falls to the ground, motionless. Villanelle tells the American to run.

The American runs in front of Eve's cab, where the driver is still rambling. It's raining. They stop and let him in. He describes what he saw on the sixteenth hole. Eve makes him get out and tells the driver to drive to the sixteenth hole.

Somewhere nearby: Villanelle is walking on a little road in a wooded area. Konstantin drives up. Villanelle says you were supposed to be here hours ago. He doesn't want to talk about it. He says they are going to get his money.

Eve finds Dasha barely alive and asks her, "Where is she?" Dasha says, "He has lovely mustache, like Stalin." Eve puts her foot on Dasha's chest and starts cracking her ribs but flees when she hears sirens.

Walking in a park, Mo calls Carolyn and says he found a thing linking Paul to the Twelve, as he walks by a bench where Rhian is sitting. She watches him walk by. She starts following him, opens an umbrella, and smiles.

Konstantin and Villanelle are walking through a train station. A guy bumps into him and walks on. He is listing everyone who wants to kill him. She says at least in Cuba you'll get murdered in a cute Havana shirt. As they walk on, Konstantin stops, grabs his heart, and thuds to the floor. Villanelle asks him where the money is. He says in his pocket, and she takes out a piece of paper from there. He says he doesn't want to die, and she says she doesn't want him to die either. He looks dead. Villanelle runs off. Eve runs up to him. Someone has called an ambulance. Eve says, "Where is she?" He looks in Villanelle's direction and Eve runs that way, toward a moving train, where Villanelle smiles and waves to her from inside as it pulls away. Eve waves back.

Back in the park where we last saw Mo, it is night. His body is lying under the water, where no one notices him.

Carolyn arrives home. Geraldine says it's uncharacteristic for her to order take-out. Carolyn says they're celebrating; someone she thought was a weasel turned out to be a weasel. She's going upstairs for a bath. She takes a call from Hugh.

Geraldine comes upstairs. Carolyn is lying on a sofa. Geraldine says the bath is overflowing. Carolyn says Mo has died but his family hasn't been informed, and he knew the risks. She fears the walls may be starting to close in on her. Geraldine tries to hug her but Carolyn refuses. Geraldine says Carolyn has to express herself. Suddenly, Carolyn smashes a bunch of glass and porcelain, regains her composure, and leaves a shocked Geraldine behind.

A doctor tells Konstantin, who is sitting up in a hospital bed, that he's had a heart attack, and asks whether he's been under any stress lately, and he starts laughing. A woman in the next bed starts laughing. It turns out to be Dasha. Konstantin says, "Jesus Christ!"

Liverpool Street, London: Eve is walking through a train station. Villanelle phones and says running into each other like that is not good for either of them.