Jean-Pierre Mocky as François Gérane

Pierre Brasseur as Dr. Varmont

Paul Meurisse as Dr. Emery

Charles Aznavour as Heurtevent

Anouk Aimée as Stéphanie

Jean Galland as Maître Gérane

Jean Ozenne as Count Elzéar de Chambrelle

Thomy Bourdelle as Colonel Donnadieu

Rudy Lenoir as The hidden man

Roger Legris as Decauville, the driver

Henri San Juan as The pool owner

Édith Scob as The singing mad

Max Montavon as Internee in the refectory

René Alié as

Luc Andrieux as Nurse

Doudou Babet as The black man

Claude Badolle as

Claude Castaing as

Jean Henry as

Pierre Koplitchev as

Jean Labarrère as

Jacques Mancier as Man with a gun

Claude Mansard as

Raoul Marco as

Diego Masson as

Pierre Mirat as Keeper

Véronique Nordey as

Henri Poirier as Priest

Alexandre Randall as

Jean Rougerie as

Jacques Seiler as Nurse

André Thorent as

Alice Guerpillon as Swimmer

Luis Masson as Intern (uncredited)

Balpo as (uncredited)

Paul Demange as (uncredited)

Lucien Camiret as (uncredited)

Sophie Poncin as (uncredited)

Sophie Saint-Just as (uncredited)

Monique Ardoin as (uncredited)

Georges Pally as (uncredited)