A cheerleader from a rival high school is murdered in the opener of this supernatural series set in a Pennsylvania steel town. The evidence points to an animal attack, but suspicion soon falls on a young gypsy who recently moved to town.
Roman confronts Peter at the crime scene; Letha reveals a surprising secret; Olivia and Norman fall back into old habits.
Christina discovers a new victim; Peter teams with Roman to find the killer; Sheriff Sworn gets outside help from Dr. Chasseur.
Letha's interest in Peter takes a turn; Chasseur and Sworn's investigation hits a new low; Roman and Peter stay one step ahead.
Shelley's connection to Dr. Pryce is further revealed; Destiny helps Peter understand the recent murder; the gala at the Tower goes horribly awry.
Peter and Roman uncover new information when they follow Lisa Willoughby's trail to the old steel mill. Meanwhile, Christina's date goes poorly.
Shelley commits an act of independence; Chasseur questions Roman and crosses paths with Olivia; Peter and Roman's friendship takes a turn.
Roman falls into a coma and goes on a subconscious journey of shocking truths and revelations.
Letha's relationship with Peter is discovered by her parents; Chasseur prepares to capture the killer.
Roman comes out of his coma and reunites with Peter to stop the killer. Meanwhile, the citizens of Hemlock Grove brace themselves for another lethal full moon.
Vigilantes hunt the killer, and Peter and his mother hide from them. Meanwhile, Christina disappears; and Roman begins to face the truth about his nature.
Peter and Roman uncover the killer's identity; Olivia and Chasseur face off at the mill; Shelley learns the disturbing truth about her family.
The conclusion to the Hemlock Grove killing spree leaves both the Godfrey and Rumancek families devastated. Meanwhile, a final horror approaches.
