"Hemlock Grove" starts with the body of a young girl, mangled and murdered in the shadow of the former Godfrey steel mill. Some suspect an escapee from the White Tower, a biotech facility owned by the former steel magnates. Others believe the killer could be Peter, a 17-year-old Gypsy kid from the wrong side of the tracks, who tells his classmates he’s a werewolf. Or it could be Roman, the arrogant Godfrey scion, whose sister Shelley is disturbingly deformed and whose mother, Olivia, the otherworldly beautiful and controlling grand dame of Hemlock Grove.
As the crime goes unsolved and outlandish rumors mount, Peter and Roman decide to find the killer themselves, confronting unspeakable truths about themselves and Hemlock Grove as the mystery unfolds.