<br /> Director Steven Soderbergh's new movie, 'Unsane', hits theaters Friday.<br />There is a lot of pre-release buzz around the film.<br />Soderbergh shot Unsane entirely on an iPhone 7 Plus. <br />That technical aspect is crucial to the movie’s storytelling.<br />Critics say it serves its narrative well.<br />In the movie, Claire Foy as Sawyer Valentini.<br />She is worried her stalker is following her.<br />Sawyer decides to sign up for a support group at a psychiatric institution. <br />
