After drunkenly attacking the Godfrey Institute, Roman falls into a coma and embarks on a subconscious journey of shocking truths and revelations.

As a full moon approaches, Letha's parents discover her relationship with Peter. Despite a crisis of faith, Chasseur prepares to capture the killer.

The tragic conclusion to the Hemlock Grove killing spree leaves both the Godfrey and Rumancek families devastated, with the final horror yet to come.