The opening of a film is important as it sets the tone and gives viewers insight into the story. An effective opening, like in the film The Strangers, shows something intriguing like the ending to encourage viewers to watch to see how it gets there. The rating is also important, as a lower rating means it can't include as much scary content and won't appeal to as wide an audience. Viewing a horror film alone makes it scarier, as the viewer feels they could experience what's happening on screen. A good opening provides a bit of scare to keep viewers interested without being the scariest part.