This sound effect we are going to use at the very beginning of the opening sequence when the words 'Based on a true story. 3 best friends went on a camping trip. Only 1 returned. This is her story' will appear on a black screen with white writing. This creepy sound will emphasize the words on the screen.
We will use this sound to suggest to one of the protagonists that the antagonist is right behind her. This will create tension and fear within both the protagonists and the audience. Using a natural sound you can find in the woods and turning it to make it something sinister further highlights the terror these girls faced and emphasizes how quickly something innocent turned into chaos and probably death.
The screams will be used quite a lot within our piece to suggest extreme fear and that something has made the girls scream. This is typical of a thriller film and this makes the audience want to know what's happened to the girls. Similarly the screams indicate the antagonist picking off each of the girls one by one which makes it even more horrifying and scary.
This sound effect will be use to suggest fear. It will also increase in speed to suggest anticipation of something going to happen. This sound will be used over the top of a happy scene which will create contrast and this is also typical of a thriller film. By adding this to our opening sequence if further sets the tone of the rest of the film for fear and panic.
This sound will be used when Lily is skipping through the woods to further suggest the genre of the film and to also suggest she's a child which makes the opening sequence even more creepy and tense as there's a child involved somehow.
Main Theme
The main theme of our film and therefore opening sequence is going to be a short piano section with the sound effect of a music box which would suggest all that was ever found of Lily was her music box she took everywhere with her. This will make the music sound even more sinister and creepy which is also typical of a psychological thriller and this relates perfectly to the idea of our opening sequence.
Here is an idea of the kind of thing we'll be looking to achieve.