Unexplained is a haunting and unsettling podcast about strange and mysterious real life events that continue to evade explanation.

This episode : The Exorcist, released on December 26th 1973, is for many the most iconic horror film of all time. But what many people don’t know is that William Peter Blatty’s nightmarish book, from which the film was adapted, was in fact based on a real life Exorcism. This is that story.