Final Idea for film

Genre: Thriller

Beth Williams is a 17 year old popular college student. She lives at home with her parents. Beth's parents have gone  to London for the week, for her mothers birthday, but Beth been a typical teenager decided that she didn't want to go, and instead she would stay at home, looking after the house and her cat Aurthur. It comes to the viewers attention, that this popular college student has been stalked by a strange boy that she has been through school with her  called Liam Ronson. His obssession has been  growing and growing and due to his illness of schizophernia, Liam's  mental state is worrying and Beth could be in deep danger, by his facination of her. When her parents go to London, various things happen throughout the week. Beth has felt a presence where ever she has been, whether this be shadows behind her when she's walking to and from college. Strange noises outside her house and weird prank calls. However things become alot worst during the final days of her parents stay at London. Two days before her parents are due home, Beth starts to panic, when she goes downstairs after a bath, to see the french doors she thought she had locked are wide open, and the net curtains blowing out into the pitch black outdoors. She hears a noise and shuts the doors quickly locking them behind her. She then phones her parents, expressing her worries but after resurance from her father, she believes that she is been 'paranoid' and 'overacting'. Convinced that there is nothing to worry about she goes upstairs to bed. The following night Beth goes to bed early, excited and relifed that her parents would be home the following day. When she hears screaming outside her heart sinks. Terrified, she dosen't move, thinking that its in her mind over thinking things again when its not needed. Then, this theory is dismissed when she sees a bright flash torch light shining through her bedroom window. Bravely, she runs downstairs holding a cricket bat that she found in her fathers wordrobe, she goes to the french doors and see's that there isn' anyone there. Feeling relief, she goes back upstairs to her bedroom. Overwhelmed and exhausted she falls asleep. Beth is awoken, by Liam hovering over her trying to sufforcate her with a plastic bag. She tries to fight him of. Beth remembers the bat beside her and picks it up, hitting Liam around the head with it. He falls to the ground and she runs downs stairs screaming. As she runs downstairs, she hears a car reversing up the drive. Its her parents. She runs to the doors crying hysterically, and as she runs outside she see's her cat Aurthur dead on the patio. She screams and her parents run up the drive. The police is phoned and Liam is taken to a mental institution where he would be treated for his schizophernia. The family are terrified by what happened but happy that Beth is alive and well.
* 12 months pass*
 and the family are happy and back  to normal. They are sat at the breakfast table when they all go silent. Liam  is on the news, he has escaped from the institution after injuring two nurses. Beths mum and dad resure her that she will be fine and after talking to the police, the family are told that they  are not at risk, as Liams health has deteriated so bad that he cannot even remember Beth. Or so they thought. Later that night when Beth is layed in bed, and her parents sat downstairs, she hears a cackle outside her bedroom followed by the fimiliar light of the flash torch shining through her bedroom window. She screams...