Executive Producer Jason Katims is talking about the bittersweet closing of his show, ROSWELL, which was cancelled by UPN recently after a three-season run on the WB and UPN.

"Normally, when I write, I try not to think too much about how the audience is going to respond," Katims reflected. "You just try to write the best story and hope that people are going to respond to it, because you'd drive yourself crazy [otherwise]. In writing this episode, I had very much the audience in mind, particularly the loyal fans of the show. I wanted to write something that I felt would be a satisfying ending for people who have been with the show since the beginning."

He also addressed a factor that has proved both the pleasure and bane of recent genre shows, namely summing up extensive mythologies in the final hours.

"I feel it certainly has a lot of story and twists and turns and all that, but what's more important to me, it has a lot of heart," Katims said. "We go back to what I think has been the central relationship of the series, which is Max and Liz. There's definitely closure for Max and Liz. At the end of the episode, our characters essentially are -- I'm not sure, I'm just thinking as I say this whether I should say this -- at the end, there's a sense of them going off together as a group, leaving Roswell, but being together."

The final new episode hits UPN May 14, with reruns of all the seasons showing up on the Sci-Fi Channel this fall.