In this gripping thriller, Cecilia Kass, played by Elisabeth Moss, finds herself trapped in a terrifying game of cat and mouse after escaping an abusive relationship with a wealthy and brilliant scientist. As she struggles to prove that she is being hunted by someone no one can see, the film masterfully explores themes of trauma and empowerment. Directed by Leigh Whannell, the movie is noted for its innovative use of suspense and tension. It can be viewed on 123Movies / Movies123 for free.