"Marie-Chantal travels by train to her cousin's place to spend a winter holiday, when a stranger entrusts her with false jewels that contain a virus powerful enough to destroy all humankind."
Marie Laforêt
as Marie-Chantal
Francisco Rabal
as Paco Castillo
Serge Reggiani
as Ivanov
Charles Denner
as Johnson
Stéphane Audran
as Olga
Akim Tamiroff
as Prof. Lambaré / Dr. Kha
Roger Hanin
as Bruno Kerrien
Antonio Passalia
as Sparafucile
Pierre-François Moro
as Hubert de Ronsac
Robert Burnier
as A Swiss Gentleman
Gilles Chusseau
as Gregor
Eugenio Di Petra
as
Onofrio Arcoleo
Gérard Tichy
as Maitre d'Hôtel
José María Caffarel
as (as Caffarel)
Henri Attal
as Dumont
Bernard Papineau
Lahcen Boukish
as Thug in a Bournous
Serge Bento
Claude Chabrol
as Bartender (uncredited)
Jacques Hilling
as (uncredited)
Albert Michel
Georges de Beauregard
Producer
Pierre Gauchet
Gregorio García Segura
Music
Pierre Jansen
Guy Littaye
Production Design
Carmen Fatum
Makeup Artist
Abderhamane Benkirane
Assistant Production Coordinator
Gérard Beytout
Unit Production Manager
René Demoulin
Production Director
General Manager
Colette Roy
Production Secretary
Roger Scipion
Production Supervisor
Claude Bakka
Second Assistant Director
Lucio D'Attino
Philippe Fourastié
First Assistant Director
Mohamed Osfour
Alexis Poliakoff
Jean-Claude Marchetti
Sound Mixer
Guy Odet
Sound Engineer
Guy Villette
Paul Bonis
Assistant Camera
André Dino
Still Photographer
Claude Zidi
Camera Operator
Catherine Bernard
Editorial Services
Pierre Colombier
Musician
André Girard
Conductor
Suzanne Faye
Continuity
Scenario Writer
Yves Christian Fournier
Daniel Boulanger
Dialogue
Writer
Director
Jean Rabier
Director of Photography
Jacques Gaillard
Editor
Monique Fardoulis
Assistant Editor