The Dark Tower. Stephen King’s The Dark Tower is the most ambitious and expansive story from one of the world’s most celebrated authors. Now, the story makes its long-awaited launch to the big screen, starring Idris Elba as Roland Deschain and Matthew McConaughey as Walter O’Dim. The film is being directed by Nikolaj Arcel (A Royal Affair), with a screenplay by Akiva Goldsman & Jeff Pinkner and Anders Thomas Jensen & Nikolaj Arcel, based on King’s novels. Producers on the film are Akiva Goldsman, Brian Grazer, Ron Howard, and Erica Huggins.