Claim: The Wolfman's screenplay was written by an American screenwriter.
Evidence: The film is directed by Joe Johnston , with a screenplay by Andrew Kevin Walker and David Self , and creature make-up effects by Rick Baker and stars Benicio del Toro , Anthony Hopkins , Emily Blunt , Hugo Weaving , and Geraldine Chaplin.
Andrew Kevin Walker -LRB- born August 14 , 1964 -RRB- is an American BAFTA-nominated screenwriter.