Nine months after Abbie Mills (Nicole Beharie) and Ichabod Crane (Tom Mison) parted ways, they reunite when Abbie, now an FBI agent, returns to Sleepy Hollow to release an imprisoned Crane. The two Witnesses face all-new dangers, including a demon who kills anyone with a dark secret, an undead army, and a horrifying beast with ties to Jenny Mills. But the arrival of a mysterious woman named Pandora brings the most terrifying threat of all. After she uses Abbie and Crane to resurrect "The Hidden One", a seemingly invincible god, the fate of the world hangs in the balance, leading to the series' most shocking climax so far. Includes the Bones and Sleepy Hollow crossover episode where Brennan (Emily Deschanel) and Booth (David Boreanaz) team up with Crane and Abbie as the world of the dead and undead collide!