The Roommate

Sara Matthews starts her first year at a Los Angeles college and quickly meets Tracy, Stephen, and Rebecca. Rebecca bears a striking resemblance to Sara's late sister Emily, which foreshadows her fixation. The trio's dynamic sets the stage for future tension as Sara navigates new friendships while dealing with memories from her past.

Rebecca's fixation on Sara intensifies, creating distance between Sara and potential friends. She attacks Tracy in the dorm shower, pins her down, and rips out her belly button ring, threatening to kill if Tracy stays near Sara. Tracy eventually moves to another dorm, fearful of Rebecca's reach.

Rebecca harms Sara's cat Cuddles and lies that the pet ran away, while claiming to have been assaulted by a thug. The incident tests Sara's trust in her new circle and reveals how far Rebecca is willing to go to isolate her. The disappearance and cover story become a chilling symbol of Rebecca's manipulation.

Sara decides to spend Thanksgiving with Rebecca, hoping to keep the peace during a tense semester. Rebecca's charm masks a possessive streak as the holiday unfolds. The visit deepens Sara's unease about how tightly Rebecca wants to control her life.

During Thanksgiving, Sara's fashion design professor Roberts kisses her, and Rebecca schemes to make it look like a coercive encounter. She seduces him and records their dialogue to weaponize it against him. The plot demonstrates Rebecca's willingness to ruin others to keep Sara's attention.

Sara overhears Rebecca speaking with her father about Rebecca's social difficulties, and her mother mentions medication. Sara and Stephen find unused Zyprexa pills, hinting at mental health issues that complicate Rebecca's behavior. The discovery heightens Sara's concern about the danger around her.

Sara decides to move in with Irene, hoping for safety and friendship. In a twist, Rebecca seduces Irene and they go back to Irene's apartment together. Sara's sense of security begins to unravel as Rebecca's manipulation continues behind her back.

Rebecca has Sara's sister Emily's name tattooed on her breast, a disturbingly close claim of identity. Alarmed by the extreme behavior, Sara collects her belongings from the dorm and plans to move out. The following morning, Jason arrives with a note for Sara, which Rebecca intercepts while impersonating her.

Jason arrives at Sara's dorm with a note, hoping to meet her. Rebecca disguises herself as Sara and goes to Jason's hotel room to kill him. The cold-blooded act marks Rebecca's escalation from obsession to lethal violence.

Sara receives Irene's urgent message and heads to Irene's apartment, only to find Irene gagged and bound. Rebecca reveals her plot, confesses to several killings, and declares her loyalty to Sara. The moment marks the turning point as Sara realizes the danger she is in.

Rebecca points a gun at Sara and moves to finish her, while Stephen briefly disarms her but is knocked unconscious. Irene pleads for Sara to escape, but the phone line is dead and help is out of reach. The room becomes a tense battleground as multiple loyalties collide.

Sara attempts to break free and confront Rebecca, who tries to smother Irene. In a brutal struggle, Sara stabs Rebecca with a box cutter and ends the threat, deciding to put her own safety first. The confrontation ends with Rebecca dead and Sara emotionally scarred but determined to move forward.

After the ordeal, Sara moves back to her dorm, removes the extra bed, and asserts that she does not want a roommate for a while. She seeks to reclaim a sense of safety and normalcy by isolating herself temporarily. The experience leaves a lasting mark on her college life.