VIDEO: Sneak Peek - ABC's ONCE UPON A TIME Goes 20,000 Leagues Under the Sea

On the next episode of ONCE UPON A TIME on ABC titled "Dark Waters" - Captain Hook has faced the impossible on the high seas, but never 20,000 Leagues Under the Sea. Once Upon a Time is new next Sunday on ABC - get a sneak peek below!

“Once Upon a Time” stars Ginnifer Goodwin as Snow White/Mary Margaret, Jennifer Morrison as Emma Swan, Lana Parrilla as the Evil Queen/Regina, Josh Dallas as Prince Charming/David, Emilie de Ravin as Belle, Colin O’Donoghue as Hook, Jared S. Gilmore as Henry Mills, Sean Maguire as Robin Hood, Rebecca Mader as Wicked Witch/Zelena and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Edward Kitsis and Adam Horowitz are creators and executive producers. Steve Pearlman, David H. Goodman and Andrew Chambliss are also executive producers. The series is produced by ABC Studios.

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