Premise: A Promise is a 2013 French drama romance film directed by Patrice Leconte and written by Patrice Leconte and Jérôme Tonnerre. The story is based on Stefan Zweig's novel "Journey into the Past" and stars Rebecca Hall, Alan Rickman, Richard Madden, and Maggie Steed. It was screened in the Special Presentation section at the 2013 Toronto International Film Festival.
Hypothesis: The film A Promise was written by 2 people.