From Wikipedia, the free encyclopedia Marcel Moussy (Algiers, 1924 - Caen, August 11, 1995) was a French screenwriter and television director. He was co-nominated with François Truffaut for the Academy Award for Writing Original Screenplay for the film The 400 Blows (1959). Description above from the Wikipedia article Marcel Moussy, licensed under CC-BY-SA, full list of contributors on Wikipedia.