Third Idea

A husband and wife are struggling to deal with their 10 year old twins because they are mischievous and naughty and both of the parents are usually occupied by their work.
They employ a babysitter to look after the kids. While the babysitter is looking after the kids, we see that she is somewhat disturbed. We come to this assumption because she is talking to herself a lot and the kids notice this behaviour and confronts her about it. She says that she is Schizophrenic and that there is nothing to worry about.

One night she tells the kids that she is going out for a jog, but what they don't realise is that she is the cause of the mysterious, gory deaths in the village and this is caused by an evil devil.
When night falls at precisely 9.32 pm, she takes a weird transformation and a spiritual devil possesses her. She tells the kids to go to bed at 9.00 so that they don't realise who she really is.

One night the children disobey her and they leave their room and while walking downstairs they hear strange scratching noises. They find the babysitter sat in the corner and when they touch her she turns around with blood all over her mouth and tries to attack them. The kids make it back to the room safely and stay there till the morning.

During the rest of the film, the kids find out more weird things that the babysitter does and starts to suspect her for the killings. The parents come home from work after getting a call from the kids and they see the babysitter while transformed.

The good side of the babysitter starts to take back her own body but the devil is too strong and overpowers her. Eventually the babysitter takes control and kills herself because she knows the damage that she has caused and that the devil would have fully taken over if she didn't die.

The opening title sequence would use a drone to follow a couple in the woods. The music becomes unsettling and the woods seems to become darker and more foggy. They come across loads of dead, bloody bodies and they try to run away, but we then see  some sort of deformed creature standing in their way, which then runs quickly towards them. Cut to black out.

I was heavily influenced by "The Evil Dead" because of the special effects and make-up of the zombie-like creatures.