The daughter of a police officer and a social worker and the middle of three siblings, Déborah François was cast by the Dardenne brothers in L'enfant in 2005 while she was in high school. Between the ages of 10 to 16 François had taken acting classes but she did not expect to make acting her career. L'enfant won the Palme d'Or in Cannes 2005 and François was praised for her sensitive portrayal of Sonia, the young mother of the film.Déborah François returned to Cannes in 2006 for the presentation of The Page Turner in Un Certain Regard category. The film's director, Denis Dercourt, who is also a musician, commented "I used to teach music to child prodigies, and Déborah reminds me of those; she's a child prodigy." In 2008 she received a César for Most Promising Actress for The First Day of the Rest of Your Life in which she played the teenage daughter of a family.François's early promise has see her make many films since that display her talent and versatility. Presently she lives in Paris and is engaged to Victor, a director of photography.