Finished with your “House of Cards” binge-watch marathon and feeling like your life is empty? Then you might be just about ready for Netflix’s next original series: “Hemlock Grove,” a new horror saga from Hostel director Eli “The Bear Jew” Roth. (Trailer here.) The show premieres April 19, with all 13 episodes hitting the service at once. The poster aims to freak you out and make you reconsider hanging out with any wolves. Or, for that matter, any people who seem like they might possibly transform into wolves.