The horror movie The Pope's Exorcist is based on the true story of the Chief Exorcist of the Diocese of Rome, though it makes some big changes to Father Amorth’s real claims. Starring Russell Crowe as Father Amorth, who is purported to have participated in over 100,000 exorcisms over 30 years, The Pope's Exorcist jumps right into the action, with the priest using all the skills at his disposal to help rid a 10-year-old boy named Henry of an ancient demon. As he struggles to save the boy from the forces of darkness, he also uncovers a Vatican conspiracy with world-ending consequences.

https://screenrant.com/popes-exorcist-father-amorth-true-story-biggest-changes/