In a trance-like state, Nadia transcribes the symbols of Rambaldi's message. The elixir wears off and Nadia escapes from her bonds, destroying the supply of elixir before Sloane subdues her. Sloane calls a contact for more of the fluid, but the contact calls Sark. The CIA learns that the elixir is stored in an inactive Russian bunker that was formerly the center of Soviet Rambaldi research. Syd and Vaughn go to the bunker, but they find it ransacked. They begin to upload data from the computers and find video files of Nadia as a young girl, writing the message. Sydney's aunt Katya appears and helps Syd and Vaughn escape after they accidentally set off a silent alarm. Sark and Lauren visit Sloane, demanding a partnership in exchange for the fluid. Sloane reluctantly agrees. At the CIA, Marshall explains that the fluid contains a protein that triggers a "muscle memory," forcing Nadia to relay the message that is stored in her as a descendant of Rambaldi. Viewing one of the video files, they see that Nadia's doctor was Dr. Jong Lee - the man who tortured Sydney, Will, and Marshall. Jack warns Vaughn not to let his thirst for revenge against Lauren endanger Sydney. He gives Vaughn a key to his well-armed security facility - implicitly suggesting he kill Lauren. Vaughn and Sydney find Dr. Lee, and Sydney is horrified as Vaughn tortures the doctor in vain for information. Jack and Katya learn that Sloane had a security system designed by Toni Cummings, who is in custody of the CIA. Jack makes a deal with Toni in exchange for her help in cracking the system. In Kyoto, Sark urges Sloane to increase the dosage so that they can complete the message. Sloane appears to acquiesce, but he calls his guards instead; the guards are easily disposed of by Sark. Lauren increases the dose, but the CIA storms the compound. Vaughn chases fruitlessly after Sark and Lauren, leaving Syd to secure Nadia alone and giving Sloane a chance to escape. Vaughn returns to help take Nadia to the helicopter, where Nadia tells them that Sloane protected her. Later, Jack visits Katya and kisses her. Vaughn goes to Jack's secret storage facility and selects a sniper rifle from the array of weapons.
Sydney: He's never divulged the specifics of this message, but he was willing to risk everything - his wealth, his legitimacy, even his life - to acquire it. This is his endgame. We have to believe that he will kill Nadia in pursuit of it.
Vaughn: Whatever Lauren did to me, I want you to know I take full responsibility for what's happened. I messed up, and if you can't get past that, I understand. But will you try?
Sydney: I don't know.
Vaughn: Will you at least think about it? Because it's all I can think about.
Sydney: Yeah. I will think about it.
Sloane: What you did yesterday, destroying all the fluid like that: I want you to know I was not angry with you. I was proud of your courage.
Nadia: Every Sunday at the orphanage in San Telmo, they made us dress up in our finest clothes. They would have us stand in line for hours waiting to be chosen by families. I wouldn't do it. I'd make myself filthy and always frown. I didn't want to be chosen, because I knew . . . I knew that somewhere my dad was still looking for me. And one day he'd come to take me away from that place . . . If I had known it was you I was waiting for, I would have cleaned up.
Sydney: In the videotape, when Nadia was a child, she was drawing something. What I assume was Rambaldi's message. If the message was already relayed, why is she valuable?
Katya: Your sister was taken away from the laboratory before she could complete the message.
Katya: The only reason I joined the Russian Secret Service was to help Irina find her younger daughter. For years we heard nothing about her; every lead went cold. But then recently we found out that her father, Arvin Sloane, was also looking for her . . . What is it, Sydney?
Sydney: Sloane has her.
Jack: I know why you checked yourself out of medical services early. I know you're under the impression you're fine, that all you need to do is hold yourself together, bury yourself in work.
Vaughn: Get to the point, Jack.
Jack: I suggest you focus your energy into achieving closure on this matter.
Vaughn: No one wants Lauren in custody more than I do!
Jack: That's not the kind of closure I'm referring to.
Vaughn: I want to find your sister, but I need to find my wife. Lauren cannot be allowed to get away with what she's done.
Sydney: Well, Lauren might. And you have to be prepared to deal with that.
Marshall: And . . . to be honest with you, I kind of like working for the good guys. No offense.
Toni: None taken.
Sloane: If we overload the cerebrum, her brain won't be able to function properly. She could die.
Sark: But we would have the equation, wouldn't we?
Sloane: Don't. Don't push me, Julian.
Lauren: You are wasting time we do not have. We have all chosen this path, Arvin. We have all made sacrifices. I trust you are willing to do the same.
Sloane: The deal's off. If you go quietly, you leave unharmed.
Lauren: You remind me of my father. When he learned the CIA was close to identifying me as Covenant, he was willing to do anything to protect me, even take the fall. He loved me that much. He's dead now, because reaching this goal is far more important.
* Nadia is a descendant of Rambaldi? Through which of her parents: Irina or Sloane?
* Why didn't whoever ransacked the Soviet bunker destroy the files?
* Vaughn's thirst for revenge leaves me cold: it feels un-natural and contrived.
* True, Lauren might get away with what she's done, but if that happens . . . oh, it'll be ugly. (I'm talking about the reactions from the fans - including myself.)