Storybrooke's inhabitants brace themselves as Greg and Tamara activate the trigger within the curse; Mr. Gold mourns; Hook rescues Bae, who is being pursued by the Lost Boys.
The Legends find themselves fighting for survival in 1863 during the Civil War, with Confederate soldiers who’ve been turned into zombies.
A series of murders are committed by someone copying a serial killer who was put in jail by Kennex's father.
Father Tomas and partner Marcus Keane discover a new malevolent presence at a home for at-risk foster children.
The exorcists must make the ultimate sacrifice to save Andy's life.