Claire Foy plays Sawyer Valentini in Unsane, the new movie from director Steven Soderbergh. Sawyer is a paranoid young woman who believes the man who’s been stalking her has followed her to where she’s moved to get away from him and begin a new life. Eventually it gets so bad that she sees someone she thinks to be a therapist about it.
Only what she’s actually done is committed herself to a psychiatric institution. Or was she committed by someone else? Her tenuous grasp on reality means she can’t be sure. Becoming ever more enraged at her situation she’s pushed over the edge when she begins seeing the man who was stalking her within the institution, as one of the workers there.