Trailer Synopsis

A college caretaker accidentally killed a child in the past; the child is thought to still be missing. The child haunts the caretaker telling him to kill others.

2 students are staying behind after college to do work, one hard working, one slacking off. Both students get locked in college after hours when strange happenings occur - can both students survive?

Some key characters: 

Our main characters follow the good vs evil idea as the girl is a bad person/student as she is on her phone when she should be studying and wastes time by going to the toilet to tweet and therefore is supposedly killed or captured, our other main character is shown studying and getting on with his work and has a better shot of surviving in the trailer as he is in a cat and mouse chase with the killer, perhaps he has a better shot of surviving as he is more ‘good’ then the other character.

Our killer is a janitor at the college and lives in the cleaner house on college’s site, we have the idea of a ghost influencing the caretakers killings, it happened 10 years previous to this situation and that is when the news report has been set, the name of the film is called ‘the mistake’ as the first death was a mistake and he is being haunted either by the dead student or a devil figure as he is a murderer in hiding.