Chosen Brief

We have decided to create a teaser trailer for a British horror film.
Our initial idea is to have a parallel world that only certain people can see, but only when they close their eyes. The parallel world is full of 'monsters' in the form of shadow like creatures that attack and kill their victims. Our protagonist is a young male who as a child discovered he could see a parallel world when he closed his eyes, but didn't realise the power that is had on the real world. However, seeing his sister killed by one of the deamon shadows, he realises that he needs to protect the people close to him.