On the whiteboard in Elena's lair is a list of other cities that she had targeted.
On this list (written in Cyrillic) are Moscow, Omsk, Zagreb, and Paris.
The liquid volume of the syringe changes between the shot where Elena fills the syringe and removes the air from it and the shot where she walks up to Nadia holding the syringe in her hand.
Carl Lumbly does not appear in this episode - making it the only season finale without Dixon.
For her performance in this episode Jennifer Garner received a 2005 Emmy nomination for Outstanding Lead Actress in a Drama Series.
The names on the Blackwell Index have changed from when it was accessed in the last episode, the name Weiss and Marshall take from it this time was not actually on this list when Jack went into it during "The Descent".
Again, they use that mini torch and touch the metal immediately. Unless it was a special CIA cool torch someone should have been burned.
Irina: (smirks at Elena) I'm not gonna torture you. I'm gonna let him do it. (jerks her head at Jack) And he really doesn't care for you. Especially after you tricked him into killing me. One thing you should know about Jack, he hates being anybody's puppet.
Jack: I'm actually hoping, you don't tell us what we need to know. There's a 50/50 chance Sydney cuts the right wire. I'm willing to take those odds...if it means I can stand here and watch you turn into an animal.
Elena: You're not a gambling man, Jack.
Jack: I didn't used to be, but it's been a rather interesting year for me. It's made me re-evaluate certain parts of my life. I'm trying to have more fun these days.
Nadia: (to Elena) You're right. (pause) I see my future. Two minutes from now, I see myself killing you.
Vaughn: Yeah, you know what? You killed my father. The way I see it, I don't have to ask for your blessings.
Irina: Despite that, you may have them. Along with some advice.
Vaughn: Marital advice from you. Wondeful. Like what, don't betray your spouse?
Marshall: The Russians rely on the Milsat satellite network to vector the bombs, right? If I can hack into it, I can shut it down.
Weiss: And violate several thousand international laws?
Marshall: We're talking about the end of the world. I'm not worried about a tribunal.
Weiss: That's a good point. Go, go, go, go...
Sydney: Vaughn, what are you telling me?
Vaughn: Well, for starters, my name's not Michael Vaughn.
Irina: (to Jack) Look. Rambaldi wrote: "When blood red horses run through the streets, and angels fall from the sky, the Chosen One and the Passenger will clash. And only one of them will survive... "
Vaughn: What are you talking about?
Irina: You're not as covert as you'd like to think.
Irina: You may not see me on your wedding day, but I'll see you.
Marshall: (calling his wife) Hi, honey. I don't -- I don't have a lot of time. I just... I just wanted to tell you I love you. I don't get to tell you that often enough. What? No, I haven't been drinking! I'm just gonna be home early tonight, okay? Bye.
Weiss: What would Jack do in this situation?
Marshall: Well, first he'd probably glower a bit. Then he'd probably blackmail or torture somebody, right?
Jack: No one can hold on to Irina Derevko for too long.
This episode was nominated for the 2006 Golden Reel Award for "Best Sound Editing in Television: Short Form - Dialogue and Automated Dialogue Replacement".
Sonia Braga and Lena Olin were billed as Special Guest Star in this episode.
Jennifer Garner, Michael Vartan and Victor Garber are the only people to appear in all episodes of Alias this season, and are also the only people to appear in every episode of the entire series this far.
Music from this episode includes:
"Lay Lady Lay" by Bob Dylan
Aired at a special time: Wednesday at 10pm ET.
Jack: You really are through the looking glass, aren't you?
Through the Looking-Glass, and What Alice Found There (1871) is a work of children's literature by Lewis Carroll and is the sequel to Alice's Adventures in Wonderland (1865).