Don’t accuse Edward Norton of taking it easy. For his first film as screenwriter and director, the star is taking on Jonathan Lethem’s novel Motherless Brooklyn, a one-of-a-kind New York story about a private eye with Tourette’s syndrome. It’s the first of Lethem’s novels to be adapted for the screen. Dick Pope (Peterloo, Mr. Turner)  is the cinematographer; Joe Klotz (The Paperboy, Precious) edited.