Fabrice Luchini

Arthur Dreyfus

Patrick Bruel

César Montesiho

Zineb Triki

Randa Ameziane

Pascale Arbillot

Virginia, Arthur's ex

Marie Narbonne

Julie Dreyfus, daughter of Arthur and Virginie

Jean-Marie Winling

Bernard Montesiho, father of César

André Marcon

The priest

Thierry Godard

Doctor Cerceau

Martina García

Lucia

Sébastien Pierre

Maître Lansky

Philippe Résimont

Codaven, director of the laboratory

Rajat Kapoor

Doctor Aman Kapoor

Marie-Julie Baup

Biker girl with the cigarette

Yilin Yang

Chinese waitress

Adèle Simphal

Student

Lilou Fogli

Emergency room employee

Guillaume Clérice

Maître d'hôtel

Laurent Dassault

Researcher

Maud Le Guénédal

Hospital nurse

Jocelyne Vignon

Assistant

Christian Valsamidis

The abbot

Celia Diane

Hostess at the airport

Rafaël Rajabian

Arthur as a child

Théo Hellermann

Man on the street (uncredited)

Josiane Combescure

Friend at the funeral (uncredited)