Upon discovering Anna’s (Elizabeth Lail) necklace in Mr. Gold’s (Robert Carlyle) pawnshop during the Once Upon a Time premiere, Elsa (Georgina Haig) will lock down the town of Storybrooke in a bid to find her sister. But taking things to an icy level will have severe consequences for the residents, namely Emma (Jennifer Morrison). Check out a sneak peek at what’s ahead: