Arrow: Season 2 has had a ton of exciting new elements for fans, including the addition of Summer Glau in the recurring role of Isabel Rochev. This week’s episode of Arrow is a big one for Glau, as Isabel’s last minute decision to tag along on a flight to Russia with Oliver, Felicity and Diggle greatly impairs the mission they’re on.

How Arrow Turned Awesome in Season 2

I talked to Glau about joining Arrow this season, Isabel’s thoughts on Oliver Queen and more, including the fan speculation that Isabel – a character from the comics herself – could also be Talia al Ghul, now that both Ra's al Ghul and his "child" have been mentioned on the series.

Summer Glau as Isabel Rochev in Arrow.

Summer Glau ("Isabel Rochev") and Emily Bett Rickards ("Felicity Smoak") in Arrow

Isabel Rochev, as seen in DC Comics.

Summer Glau as Isabel Rochev and Stephen Amell as Oliver Queen in Arrow.

No, he doesn't! But Isabel keeps trying to rein him in. He is not accepting her new place in the company and it’s been a power struggle. She shows up at the 11th hour, before they're leaving for Russia and basically just invites herself on the trip - and all the fabulous clothes that go along with it!It's not working out well for him. She's on to him and I think even though she gives him a hard time about not taking his responsibilities seriously, I think she's starting to get the picture that he's more than meets the eye. I think that it's just a matter of time before she catches him in this alternate life that he has. And she's also really honing in on Felicity. She sees that those two are always together and Felicity is always covering for Oliver and they seem to have a very close relationship and I think she's trying to wedge between them a little bit.Yes, they do. They interact more and I find those interactions so fun as an actress. it's a great chance for comedy and I enjoy my time with Emily [Bett Rickards]. It's an interesting part of their dynamic, because they're women who are both in Oliver's life, but they're complete opposites. So getting to see how they work that out is sometimes very funny.Well, another guy that's hiding things from me is Andrew [Kreisberg, Arrow executive producer], because he won't tell me anything else after this last episode that I just did. So I don't know! I don't know that she knows anything about what specifically Oliver is hiding, but she definitely is getting the picture that he's not just a party boy. There's something else going on and she wants to know what it is, because it's threatening her control over the company. The audience is definitely going to get more clues about why she's so passionate about Queen Consolidated in the first place - why it means so much to her.I think so. That's what I'm hoping. I don't know if Andrew's going to let me put on the veil and the goggles, but I'm hoping that at least we can dive a little bit deeper into that storyline, because I find it fascinating. Not in this next episode that's going to air, but in the episode I'm in after that, there's another big clue about where they're going to take Isabel next. It has to do with her past.It is fun. It was challenging. Especially in the beginning, it was challenging just because it's not something that I was used to. Isabel comes in and she's a powerful businesswoman and she has to convey that power and that control, without getting physical. Without doing any of the things that I would be used to doing. She does it with her subtle demeanor and her communication. That was an adjustment for me, but I'm really getting into it and I enjoy it. It's great fun.Yeah, it's hard. I mean, I do miss it. I'm hoping that eventually Isabel will get involved somehow. Not in the way maybe that I have in the past, but I'm itching for her to find out more about what Oliver is up to when he's not in the office and see how she reacts to that and what would happen. How that would change their dynamic and why... She obviously has some kind of connection to his past. I don't know how Andrew is going to handle that in the storytelling on the show.Yes! I know, I wasn't in that one!Absolutely. I am really excited to hear him work on the show too. He is one of the best actors I've ever worked with, so they're lucky to have him. And I hope that maybe, sometime in the future, we might be in an episode together. I think he's recurring!I have heard that theory, but I don't know... I really don't know any of the secrets about what's going to happen after this last episode that I was in. I wish I could help unveil some more secrets, but they keep them from me too!I am! That's part of the fun though. [Laughs]

Arrow airs Wednesday at 8pm on The CW.Eric Goldman is Executive Editor of IGN TV. You can follow him on Twitter at @EricIGN , IGN at ericgoldman-ign and Facebook at Facebook.com/TheEricGoldman