Thriller/horror films

We have been asked to think up 4 ideas of what we want our thriller/horror movie to be about. and once we have picked one of these idea we have to write 200 words on it.

1. a pale looking doll, who comes to life and haunts children who have seen death in their life. he shows the children their memories of the past, the horror they experience and eventually possesses the children and they end up killing the people they love and then them ending up killing themselves. The ages the children are is around 10.

2. An old mental hospital where a few teenagers go and hang out for fun, but this place has something strange about it. one girl oout of all the teenagers, starts to see strange things, lights flicker, they end up getting trapped in the hospital and as time goes on more things start to get suspicious. this girl starts to see shadows which are not meant to be there, she starts to see flickers of different, unknown faces, all the faces are pale spooky looking faces, they end up being goasts of people who died in the mental home 100 years ago. one goast ends up getting to this girl and trys to take over this girls body. there is a twist in this movie.

3. a circus- there have been murders around this town near the circus, the poilice are trying to find out the mystery but cannot work it out. it turns out to be a clown who is murdering these people, he looks like a good guy, but turns out to be a bad guy.

4. a desease comes over the world, where all the children catch this desease and get seriously dangerous, the desease is that they are constantly angry and all they want to do is kill. they try and take over the world...

The one i have chosen is the mental hospital. My idea of this Mental hospital is that a group of teanagers aged around 16-18 go to this deserted hospital to use this place for a place to chill out and smoke and drink. Once they all enter the building the door slams behind them. there are a few lights on at this time. While the lights are on one of the kids called Sarah hears something, she asks "whos there?" as soon as she says that everything becomes pitch black and the audience will not be able to see anything. However, while the blackout is occuring there are noices going on in the background. suddenly a scream and the lights turn back on again. The kids check that everyone is there and realizes someone is missing. "wheres Sarah?" One of the guys slowly scans the room with a torch and sees Sarah in the corner. She had blood dripping down her face, shes turned zombie like, and she is pointing to something behind the group. the group looks behind them and a sudden scream. this ends the first few minutes of my film.