Kelly Marcel is known for work on `` Saving Mr. Banks '' and `` Terra Nova '' as well as the upcoming film adaptation of his novel. Writer Kelly Marcel has been tapped to pen the screenplay to the film adaptation of `` Fifty Shades of Grey , '' a wildly popular erotic novel that has sold millions of copies worldwide . The `` Fifty Shades '' trilogy has been translated in 45 languages .
Kelly Marcel is known for work on `` Saving Mr. Banks '' and `` Terra Nova '' as well as the upcoming film adaptation of his novel. The `` Fifty Shades '' trilogy has been translated in 45 languages .