Marvel announced today that Chad Michael Murray and Enver Gjokaj have signed on to play series regulars in ABC's mid-season comic book adventure Marvel's Agent Carter, alongside Hayley Atwell as the title character. Take a look at the official press release from Marvel, then read on for new details on the series from directors Anthony Russo and Joe Russo.

When Hayley Atwell reprises her role as Peggy Carter in the hotly-anticipated Marvel's Agent Carter, series debuting on ABC in 2015, she won't embark on her new adventures alone!

Marvel is proud to announce the signing of two key series regulars, as Chad Michael Murray (Fruitvale Station, One Tree Hill) has been cast in the role of SSR Agent Jack Thompson, while Enver Gjokaj (Dollhouse) will portray Agent Daniel Sousa, both of whom will meet Carter while she takes on a new role at the SSR in New York City.

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Marvel's Agent Carter, starring Captain America: The First Avenger's Hayley Atwell, follows the story of Peggy Carter. It's 1946, and peace has dealt Peggy Carter a serious blow as she finds herself marginalized when the men return home from fighting abroad. Working for the covert SSR (Strategic Scientific Reserve), Peggy must balance doing administrative work and going on secret missions for Howard Stark all while trying to navigate life as a single woman in America, in the wake of losing the love of her life--Steve Rogers. Inspired by the feature films Captain America: The First Avenger and Captain America: The Winter Soldier, along with the short Marvel One-Shot: Agent Carter.

Starring Hayley Atwell as Agent Peggy Carter, Marvel's Agent Carter was written by Christopher Markus and Stephen McFeely. Executive producers are Tara Butters, Michele Fazekas, Christopher Markus, Stephen McFeely, Chris Dingess, Kevin Feige, Louis D'Esposito, Alan Fine, Joe Quesada, Stan Lee and Jeph Loeb.

Marvel's Agent Carter is produced by ABC Studios and Marvel Television.

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Although the fall TV season will kick off in the next couple of weeks, Marvel fans will still have to wait a few more months for ABC's Marvel's Agent Carter, which is slated to debut sometime next year with an eight-episode season. We reported last month that Captain America: The Winter Soldier directors Anthony Russo and Joe Russo are directing the second and third episodes of Season 1, and the filmmakers offered new details about their involvement in an interview with Collider.

Before taking on Captain America: The Winter Soldier, the brothers were best known for their work on hit TV comedies such as Community and Arrested Development. However, Anthony Russo revealed they were asked to direct two episodes because Marvel's Louis D'Esposito wanted to bring in filmmakers connected to the Captain America universe.

"This is very much a baby project of Louis D'Esposito who's one of the co-heads at Marvel. He directed the Marvel One-Shot that the series is based on, so he asked us. It's kind of nice to get the people who have been connected to the Captain America storyline involved in helping to launch that show about a character who's so critical to this universe."

Joe Russo also spoke about how glad they were Marvel and ABC decided to go with a shorter format with just eight episodes in Season 1.

"And we love that they're doing a limited run of it because it's easier to maintain quality over a lower amount of episodes. I think everything's lined up for a really, really good show there. Like you said, high concept, it only sustains for a certain amount of episodes then you just start treading water. So then you just reach a point where you're like, 'Okay 14 of our episodes are gonna be great and 8 are gonna be fine,' because you just can't fill 22 episodes of high concept... [Eight episodes] is great because it's a period show so it allows them to have a larger budget, eight's the right number, eight is an eight-hour movie. Everything makes sense about it, I'm glad that it's being done in this format."

Anthony Russo added how tough it is to deliver a full season's worth of 22 great episodes.

"We've been saying this for years, because working in network television it's so hard to deliver that many episodes; it's brutal-especially with a show that has an ambitious production dimension to it. It's crushing."

The filmmakers are currently developing Captain America 3, which hits theaters in May 2016, which means they won't be too involved with the show past the two episodes they're directing, according to Anthony Russo.

"[We're] mostly on the outside. We definitely have had some conversations with [screenwriters] (Christopher) Markus and (Stephen) McFeely and Louis D'Esposito, but we haven't been spending time in the writers room."

Joe Russo elaborated that have given advice to the writers based on their experience in television.

"There's been a little bit of just general conversations about our experience in television and potential pitfalls, things to look out for. Creatively, Markus and McFeely are heavily involved, D'Esposito is heavily involved. We'll get a script two weeks before we shoot and then we'll give our input."