Episode 13 of Supergirl was revealed yesterday to be “For The Girl Who Has Everything,” inspired by the classic Superman comic book story “For The Man Who Has Everything” by the Watchmen team of Alan Moore and Dave Gibbons. The episode is a bit of a wish fulfillment for Kara as she sees a life where she never left Krypton.
After the Supergirl press Q&A held on the Warner Bros. studio lot yesterday, we caught up with Executive Producer Andrew Kreisberg in the scrum, where he teased a bit about what this new story will be, and why it works as a Supergirl story.

“Again, it’s not like we’re sitting around combing through all of the Superman books. That’s no disrespect to Superman, who I love; it’s just that this is Supergirl, and it just so happened that that one particular Superman story, I think, works even better for Supergirl.”
“Zor-El is in it, and it’s also the episode that features Young Kal-El,” he confirms. “The villain in the episode? It’s her fate if she doesn’t make the right choice.”
Supergirl returns with new episodes Monday, January 18 on CBS.