The Blood Pearl

Naina Sahil is a Harvard undergrad student who is leading a perfectly normal life until her roommate Mitchell is found murdered in their apartment. She is still recovering from the shock when strange things happen in the apartment. She has to find a roommate soon so she can stop being paranoid about being alone. Noah Carlson, a cute boy, shows up in response to her advertisement of wanting a new roommate. They live together. But then the real horrors begin as Naina realizes she is being chased by a bunch of people with strange evil powers who could be possibly the murderers of her roommate. Amid of the evil magic people and strangely behaving Noah, Naina comes to know the center of all conflicts is a pearl given to her by Mitchell before she died. What is the specialty of that pearl?