The Exorcist (1973)
Another renowned director for the 70’s that mastered the horror genre was William Friedkin, who adapted William Peter Blatty’s novel into a film that left its mark on audiences around the world. The story was based upon the last exorcism sanctioned by the Catholic Church in 1949, making the true-life element of the film create even more tension for those who watch it. The mother (Ellen Burstyn) of the young possessed girl recruits a priest who bravely steps in to try and save the girl’s soul, but faces a power more terrifying than he could have ever imagined. The physical transformation of the young girl (Linda Blair) into the devil incarnate is still shocking to this day, and is easy to see why it had such a lasting effect on audiences when it was first released.