Elizabeth Mitchell joins 'Once Upon a Time' in mysterious 'Frozen' role 

Elizabeth Mitchell joins \'Once Upon a Time\' in mysterious \'Frozen\' role

TV geek goddess Elizabeth Mitchell is coming to Storybrooke.

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EW can exclusively reveal Mitchell has joined the cast of ABC’s

-inspired storyline. The move marks Mitchell’s return to ABC, where she became a fan favorite on

role isn’t being revealed yet, but we’re told she is “possibly malevolent” with ties to royal

familiar Georgina Haig) as well as to Storybrooke and Arendell. The events in

are expected to take place after the events in last year’s animated Disney hit. Let the speculation begin!

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