Abbie Mills

Lt. Grace Abigail "Abbie" Mills, lifelong resident of Sleepy Hollow, is the second Witness and the (former) leading lady of Sleepy Hollow.

Abbie was about to transfer to Quantico to train with the FBI, but after the death of her mentor, August Corbin, she decides to stay and gradually comes to accept her role in the fight against the Horseman as the second Witness to the Apocalypse. Abbie is the driving force in the future of understanding the new Sleepy Hollow, as well as helping Crane adjust to his new era.

She keeps much anger from her deceased mother's actions deep inside, as well as nurturing complex feelings over her father's abandonment.

Between Seasons Two and Three, she completed a course at Quantico and is now a member of the FBI stationed in Sleepy Hollow. In the season three finale, she sacrifices herself to restore Pandora's box to contain the power of the Hidden One, but her soul is subsequently released from the box and allowed to pass on after a final goodbye to Crane, assuring him that there are other Witnesses out there to assist him in his burden.