The film is based on E.L. James ' erotic novel about an inexperienced college student named Anastasia Steele , played by Johnson , who gets an education at the hands of billionaire Grey . Universal Pictures says Hunnam 's TV schedule is too busy . Hunnam was due to play the lead role of Christian Grey . Score: 6
Universal Pictures says Hunnam 's TV schedule is too busy . Hunnam was due to play the lead role of Christian Grey . Score: 6