The BAU is Florida-bound to investigate bodies discovered buried in the ocean floor off Jacksonville, but the case rattles Morgan when his aunt suspects that her missing daughter is one of the victims.
Emily's mysterious blackouts put everything and everyone she loves at risk; Victoria is confronted by two ghosts from the past.
Enemies circle as Emily is more lost than ever; a game-changing revelation leads to a new path of destruction.
The Graysons try to protect their own, as suspicion grows about the shooting of Emily Thorne.