Siobhan, Felix and Sarah arrive at a bar in England. They meet with Terry, - the man who helped to find Sarah - at the back. Siobhan's welcome home from Terry is a gun. Umm are the writers even aware that guns aren't common place in the U.K.? When Terry excuses himself, Siobhan checks out the gun, promising to kill the Castor original once found.
Rudy is undergoing testing by Dr. Coady. He quickly answers false the first time but is unable to answer the second question. A frustrated Rudy asks how long he has and Dr. Coady assures him that they will find the original Castor.
Allison's daughter is working on her karate moves and Helena takes it upon herself to show the little girl how to go for the kill. It's Gracie who stops the gruesome lesson, reminding Helena that they don't do things like that now. Helena straightens up and says that now that she is a mother, she walks a different path.
Back at the bar, Sarah is learning how she came to be with Siobhan. Siobhan shows shows Terry the poem that Rachel translated. Terry cannot make heads or tales of the little poem but he recognizes the number on the bottom, as a number issued to someone who has been imprisoned. Terry heads off to find a name to match the number.
Allison is setting up Gracie to work at the soap store but Gracie says that she has a doctors appointment this afternoon. Allison gives Gracie the day off and starts wondering where Donnie is.
Donnie is checking out his wounds from the fight he lost Jason when Allison calls. Donnie explains his absence in the bed by saying that his sinus was whistling. Allison gives Donnie his honey do list and the call ends.
Cosima makes herself a coffee and is lost in thought. Finally, she decides to read through Shay's file. When Shay enters the room, Cosima hides the file and says that she cannot get together with Shay because she has lots of work. Cosima is extremely distant and it's obvious that Shay is concerned.
There's a knock on the soap shop door and when Donnie heads to the door, he see Lionel. Lionel wants the pills, now that Kellerman is no longer vouching for Allison and Donnie. Lionel takes the container holding Helena's eggs as ransom, until Donnie and Allison return the pills to Pouchy.
Cosima has gone to see Scott about the file and he assures her that nothing in there says Shay is a spy. Cosima however cannot let go of the fact that Shay saw the book and once asked about Sarah. Scott reveals that when Rudy showed up, he knew that Cosima is sick. This does not exonerate Shay because Shay knows that Cosima is gravely ill. Cosima says that she feels like an ass for putting everyone in danger.
Felix is not the least bit impressed with the English pub food. A group of men approach Siobhan and she introduces them to Felix and Sarah as the band. Apparently, Siobhan used to light the bar up every Friday night and so they cajole her into singing a song.
Terry calls Siobhan and leaves a message saying that he is just around the corner. When Terry moves further into his room, he finds Ferdinand waiting for him. It seems that Terry had an understanding with Ferdinand that Ferdinand was to be informed if Siobhan ever came to town. Terry tries to say that he was just about notify Ferdinand and doesn't know the purpose of Siobhan's visit. Terry is suddenly attacked from behind.
In the meantime, Siobhan has taken the stage and started to sing. In his apartment, Terry gets the crap beaten out of him, as an emotionless Ferdinand watches. At the bar, Siobhan is back in her seat with a smile on her face. When Sarah brings up the Castor original, Siobhan repeats her vow to murder the original, justifying her decision by pointing out that Castor is sterilizing women. Siobhan decides to give Terry a call but gets no answer because Terry is still being beaten.
Helena is flitting around the soap shop, dancing and singing massively off cue. Gracie pops in for a moment to say that she is off to her doctor's appointment. Gracie actually hugs Helena goodbye.
Donnie is sneaking around the soap shop when Helena finds him. Donnie lies about where his injuries came from and begs Helena not to tell Allison if she calls. Helena orders Donnie to sit and tells Donnie that she will make the pain go away and then maybe Donnie will tell her the truth.
Cosima is being escorted into Dyad. Delphine snarks that Cosima is here because now Cosima believes that Shay is a mole for Castor. Cosima says that she doesn't know if Shay is or not and admits that there are things about Shay that don't line up anymore. Delphine wonders why she should help and Cosima concedes that Delphine was right about her not being able to avoid Dyad and that she screwed up. Delphine however is not trusting and asks what Cosima is not telling her. Cosima admits that Sarah is in London trying to find the Castor original. Delphine asks Cosima to leave everything with her.
Helena has created some kind of paste for Donnie, explaining that this is what they used when the nuns beat the demons from them. Donnie admits that they shouldn't have gotten involved with Kellerman but after losing his job and Allison's desire to run for trustee, he didn't see other options. Helena is impressed that Donnie did this for his family. Donnie says that he has to return the pills and get their money back. Donnie reveals that the tank is missing and Helena explains what the tank is for. Helena demands to know who took her babies and Donnie tells Helena that the people they are dealing with are dangerous. He actually calls Helena family and asks her to stay out of this.
Siobhan, Felix and Sarah arrive to find a badly beaten Terry. Terry vows that he didn't tell his attackers anything before dying. Siobhan grieves for a moment before saying that they should go home because they have lost their advantage. Sarah argues that Terry said he found something but Siobhan will not budge and orders Felix and Sarah back to the pub.
Outside, Sarah informs Felix that they are not going back because Terry's death indicates that Castor is getting closer. Having stolen Terry's cellphone, Sarah goes through his contacts and arranges a meeting by pretending to be Siobhan. They arrange to meet in the square in an hour. Felix is not the least bit excited by this plan but adds that he has to tag along to know that Sarah is safe. What neither of them realise is that they are being watched by Ferdinand.
A taxi pulls up asking for Siobhan and after Sarah confirms that's who she is, Sarah and Felix hop into the taxi.