Phenomena which came out in 1985 was directed by italian master of horror Dario Argento. It stars a young Jennifer Connelly, Donald Pleasance, and Daria Nicolodi.
The film has a good soundtrack with music by Goblin, Claudio Simonetti, Bill Wyman, Motorhead, Iron Maiden, etc.....
The film is about a rich girl who is sent over seas to a private boarding school and she has a special gift in which she can communicate with insects.
Well there is a serial killer on the loose at the school and that means gory kills, lol.
I like this film and the ending is great with the monkey. You gotta watch it to see what I am talking about lol.