The movie has found its Christian Grey in Dornan and Grimes has been cast as Elliot Grey, the brother of Christian Grey. Johnson will play Anastasia Steele, according to Hollywood Reporter.
Sam Taylor-Johnson is directing from a screenplay by Kelly Marcel. The project will go on floors in November.
Grimes plays Wes on the long-running vampire show 'True Blood'. He appeared in "Taken 2" and is a lead in "All the Boys Love Mandy Lane", the cult horror movie that just finally got released after years of sitting on the shelf.