Ichabod and Abbie discover a dark secret buried within the pages of George Washington's Bible and unearth the shocking true nature of the founding father's death. Meanwhile, Capt. Irving makes a near-impossible decision for the sake of his beloved family that drastically changes his future. Then, the battle between good and evil comes to an explosive head. Sacrifices must be made, worlds collide, loyalties are tested and the town of SLEEPY HOLLOW will never be the same.