William Peterson is leaving CSI: Las Vegas soon, I’m still not happy about this at all! He is the October 6 cover boy for TV Guide too! William recently sat down with TV Guide and talked about his leaving and how there might be a CSI movie in the future.Here are some highlights from the interview:

On a ‘CSI’ movie: “I’d love to see us make a CSI film. It could be good if we did it right. The whole world is interested in the show. That’s the other reason Grissom isn’t going to die of a brain tumor.”

What William Peterson would like to see happen between his ‘CSI’ character Gil Grissom and Catherine Willows (played by Marg Helgenberger): “We finally have sex? Believe me, it’s been brewing all along. For me, anyway. They have this understanding with each other. There’s a different kind of respect Grissom has for Catherine that would preclude a relationship on that level. Grissom’s not going away forever, anyway. Maybe he’ll go to Mexico, then come back and take Catherine with him. A tequila holiday!”

On how Grissom will say good-bye: “We’ve been mapping out my last 10 episodes that will take Grissom from one place to another. There will be no brain tumor for four episodes. That’s the easy way out. We’re trying to paint it as we have done with Jorja [Fox] and Gary [Dourdan]. We’re trying to make it as real and close to reality as the show has been all along.”

Immediate plans following his ‘CSI’ departure: “The Chicago theater community breathlessly awaits my return.” [This fall, Petersen will star in the Steppenwolf Theatre Company's production of 'Dublin Carol,' the play he took time off to star in two years ago.]

On plans to return to the ‘CSI’ set? “I’m going to come back and see the guys on set doing episodes I’m not in. And I’m staying on as a producer. The show is important to me, and I’m not abandoning it. I’m coming back on some level. I just don’t know what yet.”

I’m already crying…I wish that my two favorite characters weren’t leaving!