Alex Collins

When Ichabod Crane goes missing, his wife, Katrina, appears to Lt. Abbie Mills in a vision warning her that the Headless Horseman will return to Sleepy Hollow by nightfall. A frantic Abbie seeks help from the mysterious Henry Parrish, who holds vital clues about how Crane can vanquish his dangerous blood tie to Headless. Meanwhile, an encounter from Crane's past weighs heavily on him, and details about his first encounter with Katrina are revealed.

Miley fears that a new classmate knows her secret; Jackson befriends a new student.

Dr. Campbell attends an anti-mutant summit, attempting to take the Hound program national; some of the team at Mutant HQ goes on a dangerous mission to stop him.

Polaris learns more about her past; Mutant HQ comes under attack.