Steven Soderbergh managed to take an iPhone 7 and create a very entertaining and suspenseful 70s style exploitation movie. Because of the limitations of the camera, Soderbergh used a lot of closeups which adds to claustrophobic nature of the film. Claire Foy continues to impress and her performance here was really well done. You're rooting for her, but at the same time you are always second guessing her and her state of mind. The music helped a lot, it added to that 70s feel. Overall, it's Soderbergh's best film in years.