Plot line of our thriller

Me and my partner decided to do a psychological thriller. Our storyline involves a 16 year old male that has come back early from half-term so he is boarding alone in the house. 

 
Then he hears a scream and wakes up in a shocked state but thinks nothing of it so he goes back to sleep. Then what feels like 2 minutes later he hears another scream, which was much louder than the last one. The male then gets out of his bed and leaves his room. 
 



A sound of smashed glass is heard from the shower room down the corridor, which makes the male want to go back into his room but the   door is tightly shut. 

So the male decides to go down the corridor. He also hears the shower running  so he takes a look around the shower door and notices the smashed glass on the floor. Then all of the sudden the bedroom door behind him opens and pulls him in.