10 Scariest Horror Movie Scenes From The '80s

The slasher subgenre can be hard to innovate on since almost everything that can be done within it, has been done. And for the most part, Sleepaway Camp does not attempt to completely reinvent the wheel, with director Robert Hiltzik keeping it relatively safe for the most part.

However, Sleepaway Camp's shocking twist ending is anything but safe. In the final moments of the movie, it is revealed that central character Angela is not only the killer, but also really her presumed dead sibling, Peter.

This revelation is a true twist, one that is hard to predict beforehand. But this is not the reason for the inclusion of this scene, it is the striking imagery and sound effects that helps to make it so frightening.

Angela's identity is revealed as she stands stark naked, holding a knife, and covered in blood. This is paired with the unnerving sound of Angela growling like an animal, which only serves to make it more frightening.