Pennywise gets an origin story in Welcome to Derry trailer

Director Andy Muschietti’s two-film adaptation of Stephen King’s bestselling horror novel  IT racked up over $1 billion at the box office worldwide. Now Muschietti is back with a nine-episode prequel series for HBO, IT: Welcome to Derry, exploring the origins of Pennywise the Clown (Bill Skarsgård), the ancient evil that terrorized the fictional town every 27 years. And now we have an…