Ne le dis à personne

François Berléand as Eric Levkowitch Gilles Lellouche as Bruno, thug and friend of Alexandre Jérémie Covillault as The parking lot junkie Harlan Coben as Stranger at the station (uncredited) Christophe Rossignon as Forensic officer Françoise Bertin as Antoinette Levkowitch Marie-Josée Croze as Margot Beck, wife of Alexandre and daughter of Jacques Samir Guesmi as Lieutenant Saraoui Éric Naggar as Maître Pierre Ferrault Nathalie Baye as Maître Elysabeth Feldman Olivier Marchal as Bernard Valenti Jean-Noël Brouté as Doctor Dubois Alain Attal as Passenger at the airport (uncredited) Florence Thomassin as Charlotte Bertaud, Margot's best friend Christian Carion as Lucille's father Marie-Antoinette Canet as Secretary Maître Ferrault Jean-Maurice Bonneau as Horse show host Brigitte Catillon as Captain Barthas Guillaume Canet as Philippe Neuville, son of Gilbert Hugo Sélignac as Photo studio model Eva Saint-Paul as Madame Neuville Christof Veillon as Customs officer Lola Lefebvre as Lucille Martine Chevallier as Martine Laurentin Thierry Neuvic as Marc Bertaud Eric Savin as Prosecutor Philippe Canet as François Beck Sara Martins as Bruno's friend François Cluzet as Alexandre 'Alex' Beck, pediatrician Andrée Damant as Simone Théo Chavannes as (uncredited) Arnaud Marciszewer as (uncredited) Albert Goldberg as Bartola Jean Rochefort as Gilbert Neuville Laurent Lafitte as The Basque Dorothée Brière as Flight attendant Anne Marivin as Alexandre's secretary Maxim Nucci as Fred, Charlotte Bertaud's assistant Ludovic Bergery as Young policeman Mamadou Gary as PlayStation player Karim Adda as Impatient patient André Dussollier as Jacques Laurentin, retired gendarme officer Daniel Znyk as Medical examiner Mikaela Fisher as Zak Pierre-Benoist Varoclier as Nurse Marina Hands as Anne Beck, sister of Alexandre and companion of Hélène Jean-Pierre Lorit as Chief Warrant Officer Lavelle Alexandra Mercouroff as Lucille's mother Philippe Lefebvre as Lieutenant Philippe Meynard Kristin Scott Thomas as Hélène Perkins, Anne's companion Jalil Lespert as Yaël Gonzales Danièle Ajoret as Madame Beck Marie Martin as Margot as a child Anthony Apel as Man in the Crowd Joël Dupuch as Massive man Arnaud Henriet as SRPJ Technician

Benoît Lestang Special Effects Makeup Artist Philippe Chiffre Production Design Pierre-Ange Le Pogam Executive Producer Stephan Massis First Assistant Camera Alain Attal Producer Hervé de Luze Editor Ludovic Bernard First Assistant Director Guillaume Canet Director, Screenplay Harlan Coben Novel Gérard Lamps Sound Re-Recording Mixer Jean-Claude Lagniez Stunt Coordinator Brigitte Moidon Casting Alexis Kinebanyan Special Effects Makeup Artist Thi Thanh Tu Nguyen Key Makeup Artist Michel Carliez Stunt Coordinator Carine Sarfati Costume Design Philippe Lefebvre Screenplay Pierre Gamet Sound Christophe Offenstein Director of Photography Matthieu Chedid Original Music Composer Jean Goudier Sound Editor Patrick Ronchin Stunt Coordinator