Research into my idea. Miss Georgiou

I have come up with a few ideas for my thriller film, I have based my ideas around what creates suspsense, shock, suprise and tension. Here are a few of my ideas;

1. Hidden identity - I would like to have the identity of the villain unknown throughout the whole opening as from watching scream I can see that it creates tension and suspense throughout the film. 
2. Eerie music - I would also like to use eerie music in my piece as I believe the eerie tone of the music sets the tone of the scene and creates huge amounts of tension, and supsense which I would like my thriller film to do. 
3. High angle shot - I would like to use a high angle shot on the victim in the scene as it makes the character look inferior to the villain which makes us think the character is unstable and makes us sympathise with them. 
4. Low angle shot - I would like to use a low angle shot to portray the fact that the villain is superior to the victim and that the villain could do whatever he likes to the victim.
5. Abandoned house - I would like to use an abandoned house in my thriller film as I believe it makes the setting of the film more weird and scary. It also makes it harder for the victim to call for help and is easier for the villain to kill them. 
6. Point of View shot - I would like to use a point of view shot throughout my thriller film as i do not want the audience to see my villain one bit as it creates tension and suspense.
7. Low key lighting - The last thing i would like to use is low key lighting as i believe that from watching shutter island that it creates shadows and creates tension for the audience as they cannot see much and therefore do not know whats coming up. 

Putting all these elements together I have created an idea. My idea consists of a married couple who come home from work on their anniversary and cal upstairs to their 2 sons to hear no reply. The couple sit down to have a romantic dinner when they suddenly hear a noise from the loft. The wife notifies the husband of what shes heard but the two ignore it and continue to eat dinner. Once the couple finish the meal they go upstairs to the bedroom to find one of the sons lying on there bed. The dad shouts at the boy saying, 'why didn't you answer when i called'. The boy doesn't move. The dad then turns the boy over to find him dead with blood all over his face. They then hear the same noise from dinner again. They trace the sound to the loft and the husband enters the dark loft with a torch light. He turns to face one way and then back. He takes one more look around and the other sons face is right infront of him. He screams and falls of the ladder which then leads to the murderer peering his head out of the loft.

My narrative appeals to persons aged 15 and above as i believe it would not be suitable for someone under 15 as they might not understand the concept and also may not like the idea I have created. in addition it would target 15 year olds and aboe as strong violence is allowed as long as the film doesn't focus on the infliction of pain/injury It gives my target audience a sense of mystery throughout as they cannot see what the villain looks like as I will be using a point of view (POV) shot throughout the entire film. This will also give them a sense of tension and suspense as they are waiting to find out who the villain is. This will apeal to my target audience as the first part of the scenario is something that happens in every family and makes my target audience relate to what they would be like in that situation.