Warning: this movie is pretty grisly in spots, at least in the first half where the creepy character played by Alex McArhur goes on a couple of killing sprees. This film features a bit of an oddity: filmmakers actually opposing the "insanity plea," showing how it can be misused.

In this story, several psychiatrists are made to look corrupt and just plain stupid in parts. I also noticed a jab at Catholism in here as killings are shown in flashback as a mass is shown with the words "body of Christ" said over and over by the priest.

Overall, not pleasant to view in spots, and not super overall, but it does hold your attention and certainly brings up some good points. The screenplay and direction is by William Friedkin who did a number of interesting and controversial films.