Yes, there are striking special effects—especially for the early 1970s—but the message is what really holds the depth. The story is the classic struggle of good and evil. Demons are, after all, a form of evil personified. The fact that a young girl is the victim may be a little too true to life, but it also gives the drama considerable emotional resonance. In the end, according to the view of the writer and director, good wins. The struggle, as they portray it, is real and costly. It’s always informative to find out what those who made a film thought it was about. Even with the motive of making money, many involved in the industry still have the hearts of artists. Maybe even priests.
Having learned at the feet of post-modernists, we know that no interpretation—even that of the creators—is privileged. Just as there’s no such thing as “only reading,” no one “only watches” cinema. The acts of reading and watching inherently involve interpretation. Kermode draws that out nicely in this little book. His interpretation, as insightful as it is, is but one way of looking at it. Was The Exorcist the version originally released in 1973? Bill Blatty and Bill Friedkin disagreed to the end about what the definitive version was. The many sequels and spin-offs have reinterpreted the story in their own ways. So it is with the struggle against evil. There’s no one single way to go about it. Some make horror movies to demonstrate that point precisely. At least in my view they do.