"Hereditary" is now certified fresh on Rotten Tomatoes. Comicbook.com reports that over 90% of reviews for the horror movie have been marked as positive so far. The film is directed by Ari Aster and stars Toni Colette. "Hereditary" debuted at Sundance Film Festival this year to rave reviews, with some calling it the scariest horror movie in decades. The film hit theaters today, June 8th.