In Torchwood: Miracle Day, premiering on Starz on July 8th, everybody stops dying. All across the world, nobody dies. Day after day, people keep aging, they get hurt, they get sick, but they never die. The result is a population boom, overnight. With all of the extra people, resources are finite and, in four month’s time, the human race will cease to be viable. But, since this clearly can’t be a natural event, someone has got to be behind it, and CIA Agent Rex Matheson (Mekhi Phifer) begins to investigate a global conspiracy that leads him straight to an old, secret British institute, known as Torchwood. When Captain Jack Harkness (John Barrowman) and Gwen Cooper (Eve Myles) get involved, Rex is drawn into a world of adventure, and a threat to change what it means to be human, forever.

During an exclusive interview with Collider, actress Eve Myles talked about how excited she was for the series to film in the States, the transition for Gwen in an American world, how much the journey of Torchwood has surprised her since she first signed on, how she’s enjoyed the new additions to the cast, and how Starz has allowed them to be bigger, braver and bolder, in every way. Check out what she had to say after the jump:

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Question: How will this new transition be for Gwen?

EVE MYLES: At the beginning of this [season], you get Gwen on the end of what happened in Children of Earth. She’s left in a very dark, empty, limbo place, and the transition is very fast. It happens so quickly and is taken out of her hands, so she’s got no choice in it, which tends to happen to Gwen, on a daily basis. She’s got to go with it, and it’s a huge transition. It’s a hilarious transition because she’s literally got to fit into the American world. She’s just this little Welsh woman who’s very powerful and brave, but is also constantly scared.

Will Gwen’s husband, Rhys (Kai Owen), be drawn into things a bit more now?

MYLES: He has to be drawn into it. They’ve got a little baby girl, so the family gets drawn into it and there are massive consequences because of that.

Now that she has a family, is Gwen more resistant about constantly putting her life on the line?

MYLES: Oh, yeah. There is always that element of her walking out the door and not coming back. Nobody is safe. Your lights are out, at any point. You can just go. But, it’s not a choice that Gwen has. She didn’t choose Torchwood. It picked her. She’s just going to ride the wave with it.

What was your first reaction when you found out that the series was going to be making the move to Starz and that you would be filming in the States?

MYLES: I was a bit gaga. Literally, I was silent for about two hours. I was told, “You have to keep it to yourself.” I was thinking, “I’ve just had the biggest news of my life.” I had my little baby looking at me and I had my dog and my partner, and he was like, “Well?!” And I said, “I’m going to go do some washing up. I’m going to wash up some dishes, I’m going to take a shower and I’m going to have to have a think about things. It’s just too much to actually vocalize.” So, I came down after about two hours and I literally hopped around with excitement for about 40 minutes.

And then, the practicality and the reality of it was that I had to move my entire family to America. If it was me on my own, then it would have been okay. I would have gotten my bag, jumped on the plane and had a great time. I had the dog, I had the 1-year-old and my partner had to give up his job. It was a huge move, but it’s a move in the right direction. The show is going to be massive, and I will back this show until the day it dies. Wherever we go, I will follow, a bit like Gwen, in a way. Her loyalty to Torchwood is my loyalty to Torchwood.

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How is living in Los Angeles for you?

MYLES: I’ve come over with my family. Apart from it being Hollywood, it’s pretty much the same. It’s fantastic. The people have been so welcoming and kind, and Starz has been incredible. We all are having a ball. I love it here. I can’t tell you how pleased I am to be here and to be representing such an awesome production. What a treat everybody has doing it. It’s going to be great. It’s strange because this will be the fourth [season] of the show that I’ve been involved in, but it feels like the first because we are here, we’ve got a fantastic, brand-new cast, and we’ve got a new story to tell again. It just keeps re-inventing  itself. What’s really exciting about this particular project is that it’s always different, and it just gets bigger, bolder and braver.

Are you very surprised about the journey the show has taken, since you started with it?

MYLES: All the time. If somebody had told me, on my first day of filming, four years ago, that I’d be in [the States] with the show, I’d say, “Keep taking the drugs,” because how could that possibly happen? But, with people like (executive producers) Russell T. Davies and Julie Gardner, they make it possible. They’ve created a beast that keeps changing. It’s a shape-shifter, this show. It shape-shifts every [season]. On this scale, I can’t tell you how electrifyingly exciting and crazy this [season] is. It will pin you to your seat, every night. It’s great.

How many episodes will you be doing for the season?

MYLES: Ten

Do you think that Captain Jack Harkness (John Barrowman) will have that crossover appeal with American audiences?

MYLES: Are you kidding me?  He is drop dead gorgeous! Absolutely! How can he not? The character of Captain Jack is romantic, outrageous, beautiful, unusual, original and unique. You can’t say that about a lot of characters on the tele. And, the character is always interesting. People want to know more about it and more about him. With the concept of that character, they can do what they want with him and it will be okay.

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What was it like to work with your new cast, including Bill Pullman and Mekhi Phifer?

MYLES: With Mekhi and Bill, I’d grown up watching them. They’re Hollywood for me. They’re great American actors and film stars, and here I come, from a little small town called Ystradgynlais, in the South Wales valleys, and I’m mingling and working with these people, and they’re not at all intimidating. They’re friendly and warm and welcoming, and I couldn’t have wished for anything nicer. I really couldn’t. You hear so many horror stories, and I’ve been very blessed with these people. They’re awesome.

Are there any major changes in the transition from BBC to Starz, or is it going to be the same show that people know and love?

MYLES: For our very, very faithful and wonderful fans, it’s going to be everything they love about Torchwood. For the new fans that we’re going to get on board, it’s going to be a completely new concept and a brand new show for them. What we’re doing is taking our fans with us and bringing new ones on board. That’s all we’re doing. The transition to Starz makes us able to do a bigger production. We’ve got the facilities to make this thing huge. Instead of it being a small television show, it’s now this womping, big beast. It’s like a big movie. It’s got the premise and excitement for that. The ability of working with Starz has allowed us to be able to do that.

Do you have more of a desire now to do other work here in the States, along with Torchwood?

MYLES: Absolutely! When I knew that I was going to have to move the family out, there were so many questions. Now that we’ve been here for awhile, I can’t tell you how much we love it. There’s an excitement about the industry here. After our first read-through, I sat at Warner Bros., at the bus stop, for an hour, on my own, smiling until my face was aching. I was shrill with excitement. Whatever happens with Torchwood, if I’m lucky enough to do another show or two, or keep making Torchwood here, I couldn’t be happier.

TORCHWOOD: MIRACLE DAY premieres on Starz on July 8th