Moving into a new apartment was supposed to be a fresh start for Lilith — quiet, simple, and far away from the chaos she left behind. But from the moment she meets her new roommate, Iris, something feels… off. At first it’s small things: a smile that lingers too long, a bedroom door that never opens, a strange note that appears when no one else is around. As the days pass, Lilith begins to question everything — her memories, her safety, and the person she trusted enough to share a home with. When the rules of living together start to break down, Lilith realizes that some secrets don’t stay hidden… and some roommates are more dangerous than they seem. The Roommate Rule is a psychological thriller about trust, isolation, and the terrifying feeling of not knowing who — or what — is watching from the other side of a closed door.