Fans of “Once Upon a Time” will finally get to watch the thrilling conclusion of season four when the show returns in March, bringing a trio of terror to battle the forces of good in seven new episodes.

The spring premiere is set to air in the beginning of March with the “Darkness on the Edge of Town” episode. Joining the cast will be Kristin Bauer van Straten (“True Blood”) and Merrin Dungey (“Revenge”), with Victoria Smurfit (“Dracula”) as a featured guest star. ”Darkness on the Edge of Town” was written by Edward Kitsis and Adam Horowitz and directed by Jon Amiel.

“Darkness on the Edge of Town” picks up with Mr. Gold banished from town, and the residents of Storybrooke are attempting to resume their normal lives. Hook and Belle search for a way to release the fairies from the Sorcerer’s hat, while Emma, Henry and Regina continue to look for clues that could lead them to the Author. But when a terrifying darkness descends on the town, Emma and Regina are forced to confront the true nature of evil.

Meanwhile, in New York, Gold and Ursula enlist Cruella De Vil to join their cause. The “Once Upon a Time,” spring premiere is scheduled to begin on Sunday, March 1 (8:00-9:00 p.m., ET) on ABC.

As always the series 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.

The official list of guest stars for the episode are Keegan Connor Tracy as Mother Superior, Beverley Elliott as Granny, Merrin Dungey as Ursula, Victoria Smurfit as Cruella De Vil, Michael Querin as Banker, Panou as FBI Agent and Kristin Bauer van Straten as Maleficent.