Music: "When I'm With You" by Simple Plan, "Blend" by Something Else, "Poor Misguided Fool" by Starsailor, "If I Go" by Thrift Store Halo, "Evolution Revolution Love" by Tricky, "Galaxy" and "S.O.S." by Vigilantes Of Love, "Caught In The Sun" by Course of Nature. (edit) Amy's shrine for Lex features an article about the bank robbery from "X-Ray". (edit) Guest Azura Skye played Michael Rosenbaum's twin sister on the show "Zoe, Duncan, Jack, and Jane" and has a crush on him in this episode. (edit) Aside from being eye candy for female fans in the locker scene, Pete Ross is absent from this episode. (edit) The WB series Buffy The Vampire Slayer did a story like this about an invisible villain. The locker room scene was almost the same as the one on Buffy. (edit)

(looking at the sunset)
Lana: What do you think?
Clark: (looking at Lana) I think it's the most beautiful thing I've ever seen. (edit) Lionel: Lex, you have disappointed me.
Lex: Hi, Dad. Nice to see you too. (edit) Clark: I don't see it.
Lex: What are you, part bloodhound?
Clark: I live on a farm. I'm good at seeing needles in haystacks. (edit) Lex: (to Lionel) LuthorCorp is your company. I'm just one of its expendable employees. As you made abundantly clear when you exiled me to this charming cow-town. (edit) Lionel: Empires are not brought down by outside forces - they are destroyed by weaknesses from within. (edit) Lana: That's the thing about Clark Kent: he's not always there when you want him...but he's always there when you need him. (edit) Pete: "Have you seen the sunset from my loft?" You actually said that (to Lana)? (edit) Clark: No, I think I'll play it by ear, you know, fly by the seat of my pants...
Pete: Clark, you're not the flying type. (edit) Lex: Napoleon's mother couldn't make it to his coronation. But when he commissioned it, Napoleon told David to paint her in as if she were there, right in the center. Even though she couldn't be there physically he brought her into his life through sheer force of will. There to share in his greatness. (edit) Jonathan: Clark, you know you can't donate.
Clark: I know, dad but what am I supposed to tell her?
Martha: Kent: That you have a problem with needles, which you technically do.
Clark: Great, not only do I lie, but I look like a wuss. (edit) Nell: Lana, you still out here...? (interrupting Clark and Lana's almost kiss) Clark, do you have the time?
Clark: No, but I'm guessing it's late.
Nell: Smart kid. (edit) Clark: Lana, have you ever seen the sunset from my loft?
Lana: Yes...Ahem, but that's the great thing about sunsets. They're unique. You always see things you've never noticed before. (edit) Clark: Have you ever got information that you wish you hadn't?
Lex: In my experience I've found you can never have too much information. (edit) (checking out the invisibility stuff)
Clark: You know what you'd be if you rubbed this stuff all over your body?
Chloe: Naked? (edit)

At the end of the episode when Clark is watching Lana and Whitney on her porch, they switch the shot to one from in front of the telescope where we can see a reflection of Lana and Whitney in the lens of the telescope. Unless they were sitting 3 feet from the telescope, their reflection would not appear in the lens, and definitely not when her house is a mile away. (edit) Somehow between when Victoria steps into her bath (with her hair completely dry) and the time she sits down and lies back, her hair gets wet. (edit) On several occasions, Clark doesn't feel the effects of the kryptonite that the invisible attacker has covered himself with. This includes when Troy attacks him, when the door is slamming and the invisible man brushes past Lex, Clark, and Victoria, when Chloe has the dust on her hands. (edit) In the credits for later episodes, a clip of Lex and Clark from this episode is played. However, in this episode, Lex is on the right, with Clark standing behind him as they both go to investigate the mysterious happenings going on in Victoria's room. The scene is right before they open the door and a close shot of Lex and Clark as they approach it. In the credits of later episodes, the same clip is a mirror image, with Lex on the left and Clark behind him. This often happens in TV and I've heard it has something to do with transposing the clip from film to be edited.... (edit) So, Clark invites Lana to see the sunset "tomorrow". Night passes, its a new day, Clark goes to school, sees the medicine. Its night, Clark goes to Lex, talks about the medicine, and Victoria almost gets killed. Now, it's day again and Clark goes back to school! Clark talks to Whitney about the medicine, Clark talks to Lex again, and then sees the sunset. So Clark and Lana didn't watch the sunset "tomorrow" but rather "the day after tomorrow." (edit) So does Clark also have telescopic vision? When he sees the medicine vial in Whitney's bag with his x-ray vision, he's some distance away but is able to clearly read the name of the medicine. (edit) The usual ignored problems of being invisible:
- How do you see if light either goes through your invisible eyes or (as appears to be the case here) is bent around them? - If Jeff's eyes aren't covered by the invisibility stuff, shouldn't they be visible?
- When Jeff leaves the bathroom and cuts himself on the glass on the floor, his blood is visible. If the blood was visible, which it should not be, then why wasn't the cut on him visible? (edit) Lex comments that he "knows everything that goes on in this house." Not only was he unaware that Clark got into the house a few minutes earlier, but crooks, reporters, and his father wander in and out throughout the season and Lex doesn't seem to have a clue. (edit) Shouldn't some of the invisibility stuff wash off when Jeff tries to drown Victoria in the tub? And yet he's totally invisible when he flees after knocking Clark down. (edit)

This episode does not have any allusions. Add some now!