Jean-Paul Belmondo

Doctor Paul Simay

Mia Farrow

Christine Dupont

Laura Antonelli

Martine Dupont

Marlène Appelt

Nurse Carole

Dominique Zardi

Bishop

Daniel Lecourtois

Professor Dupont

Daniel Ivernel

Doctor Berthier

Patrick Préjean

Arthur Ringard

Michel Peyrelon

Joseph Melville

Henri Attal

'La sourde'

Maja Wodecka

Louis Duranton

Monique Fardoulis

Christophe Merle

Madame Steeg

Catherine Ohotnikoff

Josiane Balasko

Ugly girl (uncredited)

Christian Chauvaud

Friend of Dr. Popaul (uncredited)

Patrice Énard

(uncredited)

Louis Navarre

Suitor of Martine (uncredited)

André Penvern

(uncredited)

Daniel Villattes

(uncredited)

Paul Gégauff

Screenplay

Louis Devaivre

Sound Designer

Alain Belmondo

Producer

Claude Chabrol

Director

Hubert Monteilhet

Novel

André Génovès

Producer

Georges Casati

Producer

Guy Littaye

Set Decoration

Jean Rabier

Director of Photography

Guy Chichignoud

Sound Designer

Pierre Jansen

Original Music Composer

Jacques Gaillard

Editor