Plot Synopsis

When Karen's husband Andrew is hospitalized after a car accident, Karen, an EMT, finds it hard to pay their bills. Seeing the success of Airbnb, she decides to rent out their spare rooms to vacationing guests. All goes well until Miranda moves in. She quickly infiltrates all areas of Karen's life from taking a keen interest in Andrew and his brother, Tyler, to secretly videotaping her and creating bad reviews to prevent more guests from reserving rooms. When one of Karen's former guests is found murdered, she becomes convinced Miranda was involved but has no idea that kicking out her psychotic guest will send the unhinged women into a murderous rage.