When Lex takes the locket from Lionel it is on a chain around Lionel's neck. Later, Lex tells his "assistant" there was no key in the locket. This is not possible. The locket is made up out of two parts, a key and a cover. The hinged cover fits around the blade of the key which leaves the bow of the key free to attach the chain. Without the key, the chain can't be attached to the locket.
When Clark aligns the letters on the rod giving him Lionel's final message, the Kryptonian letters (from an English-Kryptonian alphabet DC Comics uses) should spell out "For The Traveler." Someone goofed making the item because instead they light up and, as the music swells dramatically, they spell out "For The Tarveler."
Trivia: At the end, Clark sprinkles dirt on Lionel's grave, a scene very reminiscent of the last scene of "Reckoning" in which Clark sprinkles a handful of snow and dirt on Jonathan's grave.
Lex was asked to identify his father's body on the stairs near the LuthorCorp building. Family members usually do that privately in the morgue and not on the street in front of everybody.
Lex killed Lionel at night time but in the picture Jimmy took, it's clearly daytime as there is sunlight shining through the window onto the desk.
Lionel: In my lifetime, I've known many famous and powerful men: presidents, sultans, kings. And I believed that I was superior to them all. But I've come to know the truth, Kal-El. My greatest accomplishment is that I have dedicated myself to protecting your life and serving you. For that, I am grateful.
Lex: My father just died and you're already breaking-and-entering?
Clark: Lionel would never take his own life.
Lex: I thought that you would least try to offer a word of comfort. Get out.
Clark: I'm not going anywhere.
Clark: I tried to be your friend, Lex. But all you care about is power and control.
Lex: This is Smallville! Meteor freaks, alien ships, cryptic symbols! These threats are real. Someone had to take control. Someone has to protect the world.
Clark: Listen to yourself, Lex. You're so caught up in your own delusions, you've lost track of reality.
Lex: Have I? Then let's talk about something you can't deny. After years of pleading with my father, showed me some compassion, he turned to you with open arms. Now what would a worldly-billionaire have in common with a simple farmboy?
Clark: Maybe he just knew he could trust me.
Lex: Of course. Everyone can trust Clark Kent. You're the perfect son. So...so why did Jonathan Kent always seem so stressed? I mean, was raising the perfect son really that much work? I wonder how much of a strain it put on his heart?
Clark: Are you blaming me for my father's death? Are you?!? You're the guilty one, Lex, not me. And this time you're going to own up to what you've done. I know you killed Lionel.
Lex: (scoffs) Who's delusional now?
Clark: I have proof.
Lois: You shot me?
Gina: You weren't cooperating.
Jimmy: How about a warning?
Jimmy: I got an exclusive for you. When we get out of here, Lois Lane and Jimmy Olsen are going to be world famous.
Lionel: What if I told you now...that you are the Traveler? You're right, your life truly changed that day. I told you in the helicopter that you were destined for a great future. That's why I've been so hard on you, trained you so relentlessly. Think, Lex, think. You have survived mortal injuries so many times. How else can you explain it?
Lex: Because I was trained never to accept defeat.
Lionel: (to Lex) You think I can control the fate of individuals? Oh God... you give me too much credit.
Lex: You're fired. Please escort Miss Sullivan from the building.
Chloe: You're not even going to give me a sec to clear out my things?
Lex: (to Lionel) I'm sure there were moments when King Arthur regretted pulling the sword from the stone. But he never gave up his quest. So why did you?
Lionel: Lex, I know how strong it is, the attraction of the dark power. But it will destroy you. I can't let you go down that terrible path. You must not open that box.
Clark: Jor-El died getting me on that ship. My dad died of a heart attack from the powers he took on protecting me. And now Lionel's been murdered protecting my secret.
Chloe: They did die for you, Clark. But ultimately, they died for all of us. There was a reason those men were in your life--each of them added something to the man that you are today.
Clark: How could Lex have done it? How does a son murder his own father?
Chloe: Total absence of love. Some say that's the definition of evil.
Lionel: Lex. Lex, if you open that box--if you get hold of that secret--there will be no redemption for you, no redemption. Ever.
Lex: I was raised in your shadow. Now, you're gonna die in mine. No one will even remember your name.
This is John Glover's final appearance as a series regular.
Jonathan Kent (played by John Schneider) is seen briefly in this episode, but only in a photograph.
Norway: Monday, April 28, 2008 10.50 pm on TVNorge
Denmark: Monday, June 9, 2008 on TV3
Australia: Thursday, July 10, 2008 8:30 on TEN HD
United Kingdom: Tuesday, September 2, 2008, 10.00pm on E4
Sweden: Friday, September 12, 2008 on TV6
Greece: Sunday, November 1, 2008 on Star
New Zealand: Friday, May 15, 2009 on TV2
Czech Republic: March 8, 2010 on TV Nova
Slovakia: August 24, 2010 on Markiza
Kristin Kreuk and Laura Vandervoort are credited but do not appear in this episode.
Lional Luthor as Christ-figure.
Many elements of Lionel Luthor in this episode allude to Jesus Christ in the Bible:
- He offers redemption to the evildoer (Lex)
- He dies to save another (Clark)
- He dies in the same position as a crucified man (body straight, arms outstretched)
Lois: I guess trying to take on one of Lex Luthor's fembots doesn't make me the smartest icicle in the freezer.
The fembots were originally created for an episode of The Bionic Woman. They were later parodied in the Austin Powers movies, and the term generally applies to any female robot.