French actor Tahar Rahim took his first steps on the red carpet at the Cannes Film Festival in 2009 for Jacques Audiard's "A Prophet", a film that would catapult him to critical acclaim. Since then, he's built up a string of impressive roles both in France and further afield. Rahim returns to the Riviera this year as a jury member. He sat down with FRANCE 24 to tell us about playing a Guantanamo detainee in his latest film "The Mauritanian", alongside Jodie Foster.