The Frozen mania has caught Once Upon a Time in its fever too and with Elsa coming to the town searching for her missing sister Anna it's a tense time in Storybrooke.

Things have not worked out well for Emma, Hook and the Charming family even after convincing Elsa that they want to help and are not threat. When OUAT left us last time we saw Elsa unsuccessfully attempting to bring down the ice wall she erected to threaten the town, as there is a similar yet stronger power in the town to hold the wall.

As Episode 3 of Once Upon a Time will open, Elsa will be the prime suspect of using a freezing charm on Marian and ultimately killing her. With the whole of Storybrooke turning against Elsa for allegedly murdering Marian, they won't realize that the real killer, somebody who has similar powers to Elsa, lives in Storybrooke.

However, the sneak peek is not clear about whether this ice cream parlor owner is framing Elsa because of some animosity or whether she is just taking advantage of Elsa to conceal her crime.

Meanwhile Emma and David will meet Will Scarlet, one of the Merry Men of Robin Hood in the woods, and Henry will aid his mother Regina in finding out who is the author of Fairy Tale Book. However, we do not know yet if Henry knows her mother's intentions about what she will do when she finds him.

More of Elsa and Anna's past and Arendale will be revealed in Rocky Road, episode 3 of OUAT, as Elsa will be facing the whole of Storybrooke and Emma will set out with Kristoff to stop Prince Hans from taking over the whole Kingdom.

Will Elsa be found guilty of a crime she did not commit or will the Snow Queen be exposed? It remains to be seen in the upcoming episodes.