Exorcist II: The Heretic (1977)
A critical failure at the time of its release, Exorcist II is often considered one of the worst films ever made. It was the last film to feature veteran actor Paul Henreid.
Regan, although now seemingly normal and staying with her guardian Sharon Spencer in New York City, continues to be monitored at a psychiatric institute by Dr. Gene Tuskin. Regan claims that she remembers nothing about her ordeal in Washington, D.C., but Tuskin believes that her memories are repressed.