Once Upon a Time season 4 just keeps sounding better and better, doesn’t it? Fans already know that Frozen is coming to the ABC hit series, with several characters already cast, and now another character tied to that storyline has been announced – and this casting news could be the best yet.

Entertainment Weekly has revealed that Lost favorite Elizabeth Mitchell is joining the show, but very little is known about her role. She is playing someone “possibly malevolent” with ties to Frozen sisters Anna and Elsa and to Storybrooke and Arendell. Mitchell’s TV credits also include ER, V and the recently cancelled Revolution.

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That’s right, Mitchell’s character could possibly be the villain of the story. It has previously been revealed that newcomer Elizabeth Lail will be playing Anna and Fringe‘s Georgina Haig is recurring as Elsa in at least nine episodes. The events in Once Upon a Time are going to take place after the movie.

That’s not the only OUAT news out there already. Series co-creator Adam Horowitz has revealed the season 4 premiere title on Twitter: “A Tale of Two Sisters.” The premiere is written by series creators Horowitz and Edward Kitsis.

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Once Upon a Time season 4 will air Sundays at 8pm on ABC this fall. Head to the comments with your best guess for Elizabeth Mitchell’s character.

(Image courtesy of Wenn/Nikki Nelson) 

Meredith Jacobs

Contributing Writer, BuddyTV

If it’s on TV — especially if it’s a procedural or superhero show — chances are Meredith watches it. She has a love for all things fiction, starting from a young age with ER and The X-Files on the small screen and the Nancy Drew books. Arrow kicked off the Arrowverse and her true passion for all things heroes. She’s enjoyed getting into the minds of serial killers since Criminal Minds, so it should be no surprise that her latest obsession is Prodigal Son.