Fifty years ago, director William Friedkin and William Peter Blatty scared and thrilled audiences with The Exorcist, an eerie, thought-provoking film featuring Ellen Burstyn. “It’s an excellent day for an exorcism,” echoed through that film’s box office run in late 1973 and all throughout 1974, challenged only by Titanic in 1997, having spawned two sequels [...]