A Loser

Claude Brasseur

as Granier

Marthe Keller

as Catherine

André Weber

as Marcel Laigneau, dit 'Marcel le dingue'

Paul Le Person

as Le commissaire Taillant

Jacques Balutin

as Tunel

Jacques Couturier

as L'oncle de Granier

Lita Recio

Robert Dalban

as Le médecin

Hélène Dieudonné

as La tante