The season finale for "V" will be a game changer for the series should it return for a third season.

Among the craziness that will be unfolding is the final reveal of what the Visitors look like under their human skin and more than a few deaths taking place among the cast as Fifth Column take their fight to Anna (Morena Baccarin) and a new cell of resistors against the Visitors is revealed.

And, according to series star Elizabeth Mitchell, the episode will leave you wanting more and decision makers are keeping an eye on how the finale performs.

"The truth, of course, is that they're watching who watches — they're watching every show to see who's watching, to see how many people are watching, to see what kind of people are watching," she told TVGuide. "I think that luring people in to the finale is a really big business. From a truly artistic standpoint, the finale is good! I'm pretty happy with it. I think it's going to be very dramatic. I think it will leave people wanting more — which is a great and bad thing. A lot happens. It's very, very apt."

This season started with Anna becoming more sinister than ever before, with recent events pushing Erica (Mitchell) down a similarly dark path in her fight to stop the Visitors. If the ratings stricken series does get a third season pick-up, Mitchell will be very happy with the direction the story takes.

"It sounds like a lot of fun. I liked where we were going," she said. "I've had a great time with it; maybe because I've gotten to get kind of dark and intricate, I really love that. That might be part of it. I'd love to do it like Rocky II where we come back and save the day."

In addition to the teases of the naked aliens and major deaths, original "V" actor Marc Singer will enter the series for a role that has been described as pivotal in the development of the Fifth Column ... and that is what Mitchell thinks is most exciting of all.

"I want to tell you, but I can't," Mitchell said. "As a sci-fi geek, I was immensely pleased by his role in all of this. It's surprising, it's different and it is ultimately very exciting. His role in everything might be the most satisfying parts of the entire finale."

"V" airs Tuesdays at 9 p.m. ET on ABC.