With only a couple weeks until the season 4 premiere of The Walking Dead, publicity about the zombie-infested show is ramping up. AMC released a surprisingly long trailer at San Diego Comic-Con and is expected to release a sneak preview at New York Comic Con. Plus, a number of new actors have been added to the cast.

Earlier this month, actress Christian Serratos (Twilight) joined the cast for a recurring role for season 4 with an option to be a series regular in season 5. She will be playing the role of Rosita Espinosa, girlfriend to the fan-favorite character Abraham Ford. This is by far Serratos’ biggest role yet, as she was only a side character in the Twilight franchise. Hopefully, she does justice to the part of Rosita, who, along with Abraham and Eugene, were great characters in the comic series.

Serratos isn’t the only new addition to the cast, though, as Deadline reports that Alanna Masterson has joined season 4 as well, also with an option to be promoted to series regular in the fifth. Masterson probably won’t be familiar to most people, but her family might be – she’s the sister of Danny (That ’70s Show) and Christopher Masterson (Malcolm in the Middle). Rumors are indicating that Masterson may be playing Tara Chalmers, a character who was introduced in The Walking Dead novel Rise of the Governor.

Many fans of the comic series won’t recognize Tara Chalmers because she only appeared in the aforementioned novel. She was a member of the Chalmers Family Band, which included her father David, her sister April, and her mother Lillian who died before the zombie apocalypse. The band toured around locally playing at carnivals. After the plague broke out, they made their way to Atlanta where they eventually met Brian Blake, the future Governor.

But what if she’s not playing Chalmers? Since Masterson’s role is still (officially) being kept under wraps, we at Screen Rant have a few educated guesses as to which survivor from the comics she could be.

[WARNING: ‘WALKING DEAD’ COMIC SPOILERS AHEAD!]

Considering Serratos is playing Rosita Espinosa, there’s a possibility that the series may eventually lead the group to the Alexandria safe-zone community where Rick and the gang find shelter in a walker free zone. If Masterson isn’t playing Tara Chalmers, she could be playing one of the residents of Alexandria, such as Jessie Anderson. Jessie has a short-lived romantic relationship with Rick in the comic series.

“Jessie Anderson” and “Holly” from the comics

Another character she could be playing is Holly, also a resident of Alexandria, who causes a rift in the relationship between Abraham and Rosita. While this is all guesswork, it would be comforting to know that the show is still using characters and adopting storylines from Robert Kirkman’s fantastic comic series. It’s also worth noting that both actresses have options for the following seasons, meaning they probably won’t be killed off at the end of this season. Probably.

With last week’s surprising news that AMC is developing a Walking Dead companion series, it looks like we’ll be seeing a lot more of the undead for the next few years. The latest episode of the Screen Rant Underground podcast goes into more detail on Robert Kirkman’s plans to create a Walking Dead universe on TV.

The Walking Dead season 4 premieres on October 13, 2013 @9pm on AMC.

Source: Deadline