A blackout requires staff to treat patients without technology, so Bell orders the staff to stop accepting new patients. Conrad and Devon go against the mandate to help a child, and Mina and Austin must perform heart surgery.
Jenny and Abbie are tempted to confront a part of their past when an iconic monster haunts Sleepy Hollow residents as they sleep; Abbie makes a decision about her career.
Small-town life is turned upside down for Freya and Ingrid, and an ancient enemy is intent on ending the Beauchamp family line.
Sebastian is placed on administrative leave after being questioned by the FBI about a foot chase. Pride and the team attempt to clear Sebastian's name.
Alexis, who's grown highly suspect of Fallon's new husband, meddles in her love life. Blake and Cristal spar over taking responsibility for the health crisis that is hurting Culhane's family.