Treatment for thriller opening

The scene will open with the girl in her room, and she is clearly traumatized by something. The opening will then go into a flashback of a night where the girl is walking home from work through the park. In the flashback we introduced another character, and through the scene we have used shots to make the boy character seem like a stalker to trick the audience into thinking that is what he is. The boy character goes the same route as the girl to get across the park and the girl thinks he is following her which makes her panicky, but when the boy disappears and he goes another way she looks around like she is searching for him. Then she runs across the field in the same direction she was heading, then the flashback ends and we are back in her room. She lifts her head and then she seems like she is having a conversation with herself saying things like: 'Did I do it?' 'No I didn't do it.' 'He was following me.' 'Of course you did. Its always your fault.' The things she is saying indicates that the girl is not in the right frame of mind, and may also be slightly crazy. The last thing she says will leave the audience in suspense, because they don't know what exactly she did, or what happened next, or was the boy innocent all along?
For the location we are using Eaton Park because at night time it can seem quite mysterious and it has interesting features for filming - like the trees around Eaton Park, and also the streets which run around the perimeter of Eaton, but also the bandstand the railings which we are going to film through. For the costumes we have put the girl in clothes which indicates she has just been to work, so she will be wearing a skirt, blouse, tights, heels and a coat to go over the top so the coat shows she is now heading home. The girl has blonde hair, and brown eyes and is quite short and has a small frame - we chose her because of these features, she seems innocent and you wouldn't suspect of her hurting somebody else. The boy will be wearing all black and a black hoodie which is very important for our filming because this hides his identity but he will also be wearing trainers which shows he could be a teenage boy, maybe the same age as her even. We weren't very particular when it came to choosing an actor because the character's identity will always be hidden. We are using a lot of close ups to engage the audience into the expressions on the actor's faces, and a tilt shot when the girl runs away to create disorder and confusion.
We don't have a particular age group which we are aiming this film at, but if we filmed the rest of the movie the genre would be police/crime which would probably depend on the audience's tastes in movies not their age. The movie would be independent, not mainstream even though the stalker theme does seem quite mainstream and like its been done several times but there aren't many modern police/crimes thriller genre movies which the movie would be if we filmed an entire movie. If I had to link my thriller opening to a movie I would link it to the independent movie 'Brick' where a girl is found murdered and her ex-boyfriend is trying to solve the mystery behind it. The reason it reminds me of it is because someone is found murdered, and even in the opening of my thriller they are questioning a girl about it.
Written by Laura Lewis