The Roommate(2008)

What you don't know... can kill you.

The Roommate is a supernatural horror film about two roommates whose close friendship spirals into terror when one of them becomes possessed by a malevolent force. Transformed into a demonic killer, she begins a deadly rampage that puts her roommate in mortal danger. To survive and break the cycle of violence, the terrified survivor must confront her deepest fears and uncover the dark truth behind the possession. As the body count rises, the remaining roommate realizes that stopping the bloodshed means facing down both the entity controlling her friend and her own psychological limits. The film explores themes of betrayal and the fragility of trust when the people closest to us become our greatest threat.