Cora, Hook, Regina, and Mr. Gold are back. More after the jump (spoilers):
The official description:
Cora does everything in her power to steal the compass away from Mary Margaret and Emma in her quest to find the entrance to Storybrooke.
Meanwhile, in order to protect Henry from further danger, Regina and Mr. Gold must put David’s life in jeopardy in an attempt to put him in contact with Mary Margaret across the lands to give her vital information that could help her and Emma return through the portal back to Storybrooke.
Guest stars (no one new this time):
Barbara Hershey as Cora
Colin O’Donoghue as Hook
Beverley Elliott as Granny
Sarah Bolger as Aurora
Jamie Chung as Mulan
Writers are Kalinda Vazquez (new to OUAT) and Daniel T. Thomsen (long-time OUAT story editor; first-time script writer for the show) and the director is Ron Underwood, who previously directed the excellent episode Red-Handed.