'Once Upon a Time' Winter Finale Sneak Peek

Elsa and Anna need to get back to Arendelle to save their kingdom from Hans and his brothers.

Anna and Elsa return to Arendelle, and old friendships are renewed on the winter finale ("Heroes and Villains") of Once Upon a Time, airing Sunday night at 8 p.m. ET/PT on ABC. Kristin Bauer van Straten (True Blood), Merrin Dungey (Revenge), Victoria Smurfit (Dracula) guest star.

In the aftermath of the Snow Queen's spell, our heroes try to pick up the pieces and Regina has to make a difficult choice. Hook's fate hangs in the balance as Gold's quest for power threatens everything he holds dear. And, in the Enchanted Forest flashback, an intrusion during Belle's stay at Rumplestiltskin's dark castle will wreak havoc in both the past and the future.

Watch a sneak peek of "Heroes and Villains" 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 Nolan, Emilie de Ravin as Belle, Colin O'Donoghue as Hook, Jared S. Gilmore as Henry, Michael Socha as Will Scarlet and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Guest stars include Beverley Elliott as Granny, Merrin Dungey as Ursula, Victoria Smurfit as Cruella De Vil, Sean Maguire as Robin Hood, Georgina Haig as Elsa, Elizabeth Lail as Anna, Scott Michael Foster as Kristoff, Raphael Alejandro as Roland, Christie Laing as Marian and Kristin Bauer as Maleficent.

"Heroes and Villains" was written by Edward Kitsis and Adam Horowitz and directed by Ralph Hemecker.