It is not surprising that The Exorcist has been voted the scariest horror movie of all time by Entertainment Weekly and Maxim. Just about anyone who has seen the movie can claim a 122-minute anxiety attack. When the theological thriller debuted in 1973 as an adaptation of William Peter Blatty’s best-selling novel, it brought the ancient concept of demonic possession to the modern world. When it was re-released in 2000 with the benefit of digital restoration, it reinforced its place in pop culture. Strangely haunting events plagued the cast and crew throughout the production of the movie. However, most of these events were not documented, as they would be today, with state-of-the-art field equipment – as they do in the paranormal reality series Haunted Discoveries. These planned, and not so planned, happenings that surrounded the film further intensified its sense of realism and otherworldliness. Just how much do you know about one of the scariest movies of all time?