This movie is simply a lie. Well documented that the exorcism movie was based on a late 40s event in St. Louis, not this crap from the 20s Iowa. Movie producers donโt care about lying any more. Pricks.
From a very simple Google search โwhat was the exorcism movie based on?โ
โThe movie "The Exorcist" was inspired by a real-life exorcism that took place in St. Louis in 1949. The events surrounding a young boy named Roland Doe, who underwent an exorcism in the St. Louis area, formed the basis for William Peter Blatty's novel and the subsequent film adaptationโ
Hereโs one of many links
https://www.stltoday.com/news/archives/article_fbdecb6a-9d3c-5903-a12c-effd4f7a7713.html#:~:text=The%20incident%20that%20inspired%20the,Louis%20on%20April%2018%2C%201949.&text=EXORCIZO%2C%20te%2C%20immundissime%20spiritus%2C,%2C%20omne%20phantasma%2C%20omnis%20legio.