The town blames Elsa when a fatal icy spell effects Marian but they don’t know that another resident has the same powers. Elizabeth Mitchell guest stars on Once Upon a Time.

While searching for her sister, Elsa ends up accidentally traps herself and Emma, putting Emma’s life in danger on Once Upon a Time.

Elsa and Anna from the Disney movie Frozen become new characters on the season 4 premiere of Once Upon a Time.