News TV Videos GRIMM preview clips – Watch “Volcanalis” tonight on NBC Written by Lena Lamoray on April 26, 2013 “Volcanalis” – On the next new episode of Grimm, a demon arises and all hell will break lose! Meet Stefania Adalind crosses paths with a gypsy with sinister intentions. Related posts:'Breaking Bad' creator Vince Gilligan guest stars on 'Community''Saturday Night Live' promo with host Lena Dunham 'The National Dog Show Presented by Purina' will air on NBC on Thanksgiving Day