In a small Pennsylvania town, something evil has come in search of prey. But who is the true monster in Hemlock Grove? The brutal slaying of a teenage girl sends the townspeople of Hemlock Grove into a desperate search to find her killer. But this sleepy community soon finds itself living a nightmare as secrets and rumors threaten to drive them all down a dark path as they struggle to uncover the truth. As they hunt for a monster among them, rumors mount and many of the eccentric residents become suspects, from the newly-arrived Gypsy family to the wealthy Godfrey clan. In the twisted world of Hemlock Grove, everyone hides a dark secret.