When Brainiac explodes, Clark is not standing in the same spot/position as he was before Brainiac blows up.
When Clark asks Chloe to play the black box audio again, and when he asks Chloe to play the remaining audio, the same footage of Chloe clicking the mouse and looking at the monitor is used both times.
Why did Clark let Chloe face Kara alone? Her argument that the Kryptonite would affect Clark was valid, but surely he could've been nearby watching the whole thing from a safe distance with his X-ray vision. Just because Chloe had kryptonite didn't guarantee her safety even without the knowledge that Kara was Brainiac in disguise.
On Edward Teague's Argentinian passport, the day of birth reads: 16th Junio (June). The "th" expression doesn't exist in Spanish; the proper way of writing it would be "16 de Junio."
Trivia: At no point in season 7 did Clark use his super-breath ability. This makes this the first season that he did not use all of his powers at some point throughout it.
Lex smashed a hole in the stone fixture above his fireplace to uncover the device in "Quest" yet it appeared undamaged in this episode.
Lex: Who am I to turn my back on my fellow man? Especially after you turned your back on me? I'm sorry, Clark. But you are the Traveler. You hold the future of the entire planet in your hands. I'm here to take it back.
Lex: You'll never threaten the world again... Kal-El.
Brainiac: This is a simple matter of self-preservation. When I couldn't kill you, I knew I had to control you.
Clark: I'm in control now. And you will release Chloe! You'll release Lana!
Brainiac: The only way to save them would be to kill me now, in cold blood. Which goes against everything you stand for. You could never deliberately take another man's life.
Clark: You're not a man. You're a machine.
Lana: (to Clark) I need you... but the world needs you more.
Chloe: (pulls kryptonite out on Kara) Why isn't it working?
Kara: Check the expiration date?
Kara: You know, for the last surviving member of a secret society, you're not a very good liar.
Jimmy: I found out something about those mystery expeditions he's been sending to the North Pole.
Lois: Either he's planning a hostile takeover of Santa's workshop, or he's doing something illegal. And since I'm sure Lex isn't into the Christmas spirit, what's the scoop.
Jimmy: Look, Lex, I would really like to help, but lying, it's just, uh, you know, it's not my thing. It's eating me up. It's actually… it's making my stomach hurt.
Lex: Well it's never too late to learn a new skill.
Kara: Why is it every time I bring up Veritas, people seem to suffer from sudden amnesia?
Brainiac: (to Chloe) I'm impressed. I wouldn't have thought a member of your weak-willed species, especially a friend of Kal-El's, could ever use kryptonite against his cousin.
Jimmy: You know what? Maybe I should… yeah, I'll carry you upstairs.
Chloe: Jimmy, we're climbing the stairs to the Talon, not scaling the mountains of Tibet. I'm fine.
Lex: (looking at the Fortress) I must admit, Clark. This is a big step up from the barn.
Clark: It's not what you think, Lex. You don't understand.
Lex: For the first time, I think I do. You see, you live among us as a mild-mannered farm boy. But secretly, you're a strange visitor from anther planet, plotting our demise.
Clark: That's not what I'm doing at all.
Lex: It's a brilliant disguise, Clark. You don't even need a mask.
Clark: I'm not your enemy, Lex. I've never done anything to hurt you.
Lex: You didn't trust me. With everything you had, with everything you could do, did you ever think about what we could have accomplished together? I would have helped you become a hero.
Chloe: Jimmy, I realize that I was the one that was just in the ICU, but you seem to be the one with marred motor skills.
Kara: I'd always thought the Traveler was meant for good. Even he thinks he is. When I went home to Krypton, I learned the truth about his fate. He won't save mankind. He'll destroy it.
Lex: Who is it?
Kara: Don't you already know?
Clark: Have you come into contact with red kryptonite--a ring, a necklace?
Kara: I stopped wearing jewelry.
Lex: I loved you like a brother, Clark. But it has to end this way. I'm sorry.
Music: Perfect (Simple Plan), Ashamed (Orgy), Perfect (Michelle Featherstone), Enough is Enough (Homy)
These are Michael Rosenbaum, Kristin Kreuk, and Laura Vandervoort's last appearances as series regulars.
In the commercials advertising the latter part of this season, there was a very heavily emphasized clip featuring Lex, in full arctic-gear, approaching and discovering the Fortress of Solitude from the outside. That scene was absent from this episode, the only episode it could have occurred in. Presumably it was cut for time's sake.
John Glover is credited but doesn't appear.
Injoke: Lex's line "See, you live among us as a mild-mannered farmboy; but secretly you're a strange visitor from another planet, plotting our demise." references the opening lines of the animated Fleischer serials.
James Marsters is billed as Special Guest Star.
Norway: Monday, May 26, 2008 10.50 pm on TVNorge
Denmark: Monday, June 23, 2008 on TV3
Australia: Thursday, August 14, 2008 on TEN HD
United Kingdom: Tuesday, September 30, 2008 on E4
Sweden: Friday, October 10, 2008 on TV6
Greece: Sunday, November 30, 2008 on Star
Czech Republic: March 12, 2010 on TV Nova
Slovakia: August 27, 2010 on Markiza
Jimmy: So I guess wax on, wax off, we're even now, right?
Referencing the 1984 movie The Karate Kid starring Ralph Macchio and Pat Morito. Morito's character trains his student by having him apply and take off wax from his vintage car.
Jimmy: We can have Breakfast at Tiffany's in the morning.
Referencing the 1961 movie starring Audrey Hepburn and George Peppard, based on the novel by Truman Capote. Tiffany's is known for its fine engagement rings.
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