Jonathan Zaccaï as Théo

Guillaume Depardieu as Martin

Lionel Abelanski as Denis

Frédérique Meininger as Monique

Chloé Réjon as Alice

Sarah Grappin as Louise

Jean-François Stévenin as Emile

Pierre-Quentin Faesch as Paul

Jean Senejoux as Théo à 12 ans

Léo Legrand as Martin à 12 ans

Baptiste Caillaud as Théo à 16 ans

Milan Mauger as Martin à 16 ans

Christèle Tual as Christine

Stanislas Martin as Thierry

Fred Epaud as Le blond

Pascale Vignal as Marie

Marc Susini as Le policier Denis

Armand Chagot as Le propriétaire de la villa

Marc Bodnar as L'homme bagarre

Irène Chauve as La secrétaire

Nadine Chabrier as L'employée de l'hôpital

Ludovic Fornes as L'adversaire de Théo

Calogero Contrino as L'abritre

Mylène Dubreu as Lisa

Alicia Fleury as Isabelle

Jules Neel as Denis à 12 ans

Marie-Gaëlle Cals as La rescapée

Hélène Darras as La supportrice (uncredited)