The character's name is Luke, and is the best friend of Tom. The two are the first to arrive at the student accommodation. Luke decides to search through the house- then he reaches room 11, and there he meets the cruellest evil- a demon.
During his time there, physically and mentally, he starts to change. The evil is taking over and will go after his friend, Tom.
The writers and I drew heavy inspiration from the character Jack from The Shining (1980).