THE GREATEST SHOWMAN which hits theatres around the world this Christmas! Inspired by the imagination of P.T. Barnum, THE GREATEST SHOWMAN is an original musical that celebrates the birth of show business and tells of a visionary who rose from nothing to create a spectacle that became a worldwide sensation.The true story movie also stars Zac Efron, Rebecca Ferguson and Michelle Williams. It is directed by Michael Gracey who previously worked on special effects in movies. The movie wasn’t originally envisioned as musical.