The fresh batch of episodes are to begin streaming online next year.
Starring Famke Janssen, Bill Skarsgard, Landon Liboiron, Freya Tingley and Dougray Scott, the show was created by executive producer Eli Roth and based on Brian McGreevy's novel of the same name.
"The worldwide fan response to 'Hemlock Grove' was phenomenal," Roth said in a statement Wednesday. "Netflix members loved the potent combination of sexy monsters, mystery, and the dark family soap opera that ended with a huge twist, leaving audiences worldwide totally shocked. Season 1 was just a warm up for what we have in store for Season 2. Get ready to be scared in ways you never expected."