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 official trailer a month before the prequel's October debut. (Some spoilers below for IT and IT: Chapter Two.)