Pennywise the Dancing Clown has haunted the minds of horror fans for generations, but with 2017's IT Chapter One, the Stephen King creation shot to new heights of popularity, chomping his way through the competition to become the highest-grossing horror film of all time (not adjusting for inflation). Director Andy Muschietti and producer Barbara Muschietti, along with screenwriter Gary Dauberman (Annabelle Comes Home) shepherded Warner Bros. and New Line Cinema's sensation, but for their first go-round, the IT team built from a structure set by previously attached filmmaker Cary Fukunaga and his co-writer Chase Palmer. …