Eric Barbier Director, Screenwriter Charlotte Gainsbourg Nina Kacew Actor Pierre Niney Romain Gary Actor Didier Bourdon Alex Gubernatis Actor Jean-Pierre Darroussin Zaremba Actor Catherine McCormack Lesley Blanch Actor Finnegan Oldfield Capitaine Langer Actor Pawel Puchalski Romain (8-10 ans) Actor Nemo Schiffman Romain (14-16 ans) Actor Lou Chauvain Mariette Actor Marie Eynard Screenwriter Romain Gary Writer Eric Jehelmann Producer Philippe Rousselet Producer Romain Le Grand Co-Producer Vivien Aslanian Co-Producer Jonathan Blumental Co-Producer Sylvain Goldberg Co-Producer Serge de Poucques Co-Producer Gigi Akoka Casting Glynn Speeckaert Cinematographer François Maurel Sound Engineer Pierre Renson Production Design Catherine Bouchard Costume Design Heloïse Moreau Script Supervisor Jennifer Augé Film Editing Ken Yasumoto Sound Editor Marc Doisne Sound Mixer