Returning for its highly anticipated second season, The Vampire Diaries is the story of two vampire brothers obsessed with the same beautiful girl, and battling to control the fate of an entire town.

During Season 1, Stefan (Paul Wesley) and Damon Salvatore (Ian Somerhalder) returned to their hometown of Mystic Falls, where they both became enamored with high school student Elena Gilbert (Nina Dobrev). Season 2 will see the appearance of the villainous Katherine (also played by Nina Dobrev) throwing a wrench into the love triangle between Stefan, Elena and Damon. This time around, the stakes are raised even higher as new and unexpected friendships are forged, allies become enemies and hearts are broken, and Stefan and Damon are forced to face a villain more evil and diabolical than they ever believed possible.

In a recent interview to promote the Season 2 premiere, executive producer Kevin Williamson talked about what fan can expect, why Katherine has returned and that the werewolves will play a bigger role in the story. Check out what he had to say after the jump:

Question: What’s in store for the fans this coming season?

Kevin: Well, Katherine being back in Mystic Falls is a bit of a game changer for the show. It’s about, “How is that going to affect Damon and Stefan, in terms of Katherine now being back in town?” It’s so hard to talk about it without giving anything away because it seems like everything is a surprise and everything is a twist. But, Katherine comes back and pretty much states why she’s back. It will be fun to watch that play out. If you’ve watched our show in the past, you know that there’s always more than one reason why someone is there. It’s a huge journey.

What is Katherine’s reason for being back?

Kevin: She says that she wants Stefan and that she came back for him.

Could she just be saying that?

Kevin: Maybe. Could be.

How is Katherine now different from Katherine in 1864?

Kevin: She’s meaner. Actually, it’s going to be interesting to watch. She’s different, in the sense that she doesn’t have to wear corsets anymore. I’m scared to say because it will tease where she’s been. What she’s been up to is a bit of a secret. This is one of those shows you just can’t talk about. It sucks.

Are you going to have a few flashback episodes, like in Season 1?

Kevin: Right now, we have one. We have three flashback episodes planned, and I’m guessing there will be a fourth.

Will there be flashback scenes with any of the characters that departed from the show?

Kevin: Yes.

Will there be a reappearance of Isobel in Season 2?

Kevin: Not right away. I don’t have any plans, in the first half on the season. We’ve broken the whole season, but we haven’t individually broken down the back nine episodes. I’d hate to say no and then turn around and do it, so that you can make a liar out of me, but not in the first 12 episodes.

How much will viewers see of the werewolves this season?

Kevin: Tyler (Michael Trevino) is going to learn, through help from his Uncle Mason (Taylor Kinney), who comes to town in the very first episode, who and what he is. He’s going to learn about the curse, who he is and how he responds to it. It’s going to be a typical growing up story and a coming-of-age tale. But, it’s horrible to have all these questions about why you’re the way you are, why you’re so angry and why you always feel so lost, and then you get the answer and you don’t like it. It’s going to be a fun journey for him, and it’s going to be violent.

There was a lot of pressure going into Season 1, just for the show to succeed. Now that this show is so popular, was there pressure to outdo yourself in Season 2?

Kevin: There is a lot of pressure to keep it up. It’s a very hard show to write, I’ve discovered, because there’s so much genre mixed with relationships and characters. I didn’t realize how hard it was going to be. But, I do think we’ve found a rhythm to our show, which is some sort of human relationship and a mythology that runs concurrently with it, so yes, we are going to continue to mythology.

We’re going back to zero and telling a new story, but it’s the story that you already know half of because you’ve watched the first season. It’s the other half. We’re just going to continue the story. There’s so much to still know about 1864. What happened? Why wasn’t Katherine in the tomb? How did she escape? Where did she go? Why did she come to Mystic Falls, to begin with? What brought her to Mystic Falls? There’s all those fun questions that we’re going to explore, and how the Lockwood curse figures into it. It will be fun.

THE VAMPIRE DIARIES returns for Season 2 on The CW on September 9th