Rocky Road

S4, E3: When an icy spell is cast on Marian, which will ultimately freeze her heart and kill her, the Storybrooke residents place the blame on Elsa. Plus, Regina teams up with Henry to try and discover who the author of the fairy tale book is. Meanwhile, in Arendelle of the past, Elsa and Kristoff set off to stop Hans from attempting to take control of the kingdom.