When Season 4, episode 5 of "Once Upon a Time" airs Sunday, Oct. 26, at 8 p.m. EDT on ABC titled "Breaking Glass", viewers should be prepared to meet the Snow Queen.

While actress Elizabeth Michell deubted in Storybrooke some weeks back as the long lost aunt of Elsa (Jennifer Morrison) and Anna (Elizabeth Lail), fans were actually left with more questions than answers. The official synopsis of "Once Upon a Time" Season 4, episode teases that while trying to provide answers to some queries, it will also bring back further trouble.

According to the synopsis, the show will dive into Emma's (Jennifer Morrison) past once again. Viewers will be shown a flashback of young Emma finding a "kindred spirit when she befriends a girl, who, like her, is a runaway orphan."

Here the question is whether the young friend of Emma has anything to do with the Snow Queen as well as her acquaintance with the Savior.

Eventually Emma will take a break while in her pursuit for the Snow Queen after she loses her trial in the previous episode. On the other hand, Sidney (Giancarlo Esposito), who is currently ensnared in Regina's (Lana Parrilla) mirror, will find her whereabouts, which will lead to an unwilling Regina to join forces with Emma to locate the villain. However, the question remains as to why Regina would agree to work with Emma. It seems that if the erstwhile Evil Queen actually wants to thaw out Marian (Christie Laing).

In the mean time, Mary Margaret (Ginnifer Goodwin) and David (Josh Dallas) will eventually get their first date night following Prince Neal's birth when Belle (Emilie de Ravin) agrees to babysit. Nevertheless, the two do not get a relaxing night out, as Will Scarlet (Michael Socha) escapes from the Storybrooke jail.