Bolder, sexier, and loaded with eroticism, “Fifty Shades Darker” is everything a sequel should be, greater than the sum of its original. “Fifty Shades Darker” fully realizes the potential of its source material, in a movie that dares to be free with its sensuality, and contemplative with its story. To state the matter plainly, “Fifty Shades Darker” is the first movie to snap this film enthusiast out of their 6-month, movie-viewing slumber.