An exciting new Once Upon a Time Season 5 sneak peek teaser debuted at this weekend's D23 Expo 2015, during the “Once Upon a Time: An Evening with Snow White & The Evil Queen" panel. The panel featured Ginnifer Goodwin (Snow White) and Lana Parrilla (The Evil Queen) who were joined by the show’s co-creators, Edward Kitsis and Adam Horowitz, who discussed the upcoming season.
In the season 5 premiere sneak peek, Captain Hook (Colin O'Donoghue) attempts to summon a newly-turned Emma Swan (Jennifer Morrison) with the Dark One's dagger, as the dagger's rules state he can summon the Dark One in any corner of the world. When Hook's attempt proves unsuccessful, Regina deduces a big problem: Emma is not in their world. Where could she be?
On the Season 4 finale, our favorite Storybrooke heroes saw Emma go from being the Savior to becoming the Dark One in order to save Regina. Emma tasked her parents Snow and Charming (Josh Dallas) with taking the darkness out of her again as Hook begged her not to go through with it. In the end, darkness took over and Emma is pulled into a vortex that takes her away.
WATCH: Emma Becomes the Dark One
Tune in to the Once Upon a Time Season 5 premiere SUNDAY, SEPTEMBER 27 8|7c.