Complete story — includes the ending
Ichabod is confronted by The Hidden One at the archives and is saved by the symbol, which drains his magic and creates a mystic barrier around the Archives, trapping him and Ichabod within. In the tunnels, Abbie encounters Pandora and learns the symbol is known as the Emblem of Thura, and that it can contain even the strongest gods. With few other options, they agree to work together to destroy it. Meanwhile, Jenny, Joe, and Sophia investigate a case involving three men who were killed by a banshee. After learning the banshee is irritated by loud noises, they lure it with an ambulance siren, but before they can kill it, Abbie sends Jenny a text saying they need it alive so Pandora can use it to break the barrier, and it escapes. Joe is forced to kill it to save Jenny and offers himself to Pandora in its place. Assuming his wendigo form, Pandora channels Joe's dark energy using the fragments of the box, including the one Jenny and Joe have, and breaks the barrier. Afterwards, Ichabod discovers the emblem has been destroyed, along with the tablet.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Sleepy Hollow season 3. HTML formatting and reference markers removed. · Content license