This is really great.
For my part I wouldn’t have guessed that this was a “first” story. You have taken a good simple premise with a developed it nicely to a short topic. This was a good use of sarcasm by Lois with the “only tonight” comment and I like the way Lois keeps referring to Clark in the 3rd person.
This also leaves enough of a hook to continue the story. For example, what was the “rest of the story” on the CD and Kryptonite? Are they going to be OK-enough to investigate this together?
Bob