The Roommate

Sara Matthews begins her freshman year in Los Angeles, settling into campus life. She quickly meets Tracy, Stephen, and her enigmatic roommate Rebecca, who bears a striking resemblance to Sara's late sister Emily. Sara also carries memories of her ex-boyfriend Jason who keeps reaching out to reconcile.

Rebecca's attachment to Sara intensifies, and she begins pushing away anyone who might threaten their bond. She claims she is a bad influence and escalates to violence, attacking Tracy in the shower and threatening her to stay away from Sara. The atmosphere around Sara grows tense and dangerous.

Tracy, terrified by Rebecca's behavior, relocates to another dorm to escape the mounting pressure. The group dynamic is strained as Sara navigates her friendships and Rebecca's fixation. The sense of danger becomes more palpable for Sara.

An RA discovers Sara's cat, Cuddles, triggering Rebecca's further manipulation. Rebecca kills Cuddles and tells Sara the cat ran away, deepening Sara's suspicion that Rebecca is dangerous. Sara remains unaware of how close the danger is.

Sara spends Thanksgiving with Rebecca, creating a tense, uneasy holiday for both. Professor Roberts kisses Sara and Rebecca begins plotting to manipulate the encounter, aiming to turn the professor into a threat to Sara. She records their dialogue to frame him later.

Sara and Stephen discover an unused bottle of Zyprexa pills, hinting at Rebecca's mental health history. The find raises suspicions about Rebecca's stability and whether she is capable of being trusted. Sara weighs how much to trust her friend in the face of odd behavior.

Sara decides to move in with Irene for safety, but Rebecca seduces Irene and they leave together. The shifting loyalties intensify Sara's sense of isolation as her support system fractures. The nights grow tense with unpredictable actions by Rebecca.

Rebecca privately tattoos Sara's sister Emily's name on her own body, making Sara uneasy about the boundaries of Rebecca's obsession. Alarmed, Sara begins removing her belongings from the dorm to reclaim some control. The unsettling behavior marks a turning point toward confrontation.

Jason leaves a note asking to meet Sara, but Rebecca intercepts it and disguises herself as Sara. She travels to Jason's hotel room to confront him and set events in motion. The deception marks the escalation toward violence.

Rebecca, posing as Sara, stabs Jason to death in his hotel room. The murder confirms that Rebecca will go to extreme lengths to control Sara's narrative. The body count begins to reveal the depth of her obsession.

Sara rushes to Irene's apartment after Irene texts for help and finds Irene gagged and bound. Rebecca reveals herself, professing love for Sara while admitting she orchestrated the attacks on Tracy, Cuddles, Professor Roberts, Irene, and Jason. The confrontation makes Sara realize the breadth of Rebecca's manipulation.

Rebecca points a gun at Sara and aims to smother Irene, prompting a brutal struggle. Stephen briefly disarms Rebecca but is knocked unconscious, and Sara fights to escape. In the end, Sara stabs Rebecca to death with a box cutter, ending her reign of terror and declaring that Rebecca was never her friend.

With Rebecca gone, Sara moves back to her dorm and clears the extra bed, deciding she will not have a roommate for a while. The traumatic events force Sara to rebuild a sense of safety on campus and set firm boundaries for herself.