Ne le dis à personne

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

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