Six people travel by train overnight from Marseilles to Paris. When the train arrives at its destination, one of the passengers, a girl, is found dead in a sleeping berth. The police led by Inspector Grazzi investigate the other five passengers, suspecting that one of them was responsible. However, as the investigation is stepped up, the other passengers start turning up dead. It is then up to the last remaining two to solve the case, before they become the next victims.
Yves Montand
Pierre Mondy
Jean-Louis Trintignant
Jacques Perrin
Catherine Allégret
Simone Signoret
Claude Mann
Michel Piccoli
Pascale Roberts
Charles Denner
Nadine Alari
Monique Chaumette
Paul Pavel
Christian Marin
Tanya Lopert
Jenny Orléans
Daniel Gélin
Françoise Arnoul
Serge Rousseau
Dominique Zardi
Claude Berri
Bernadette Lafont
Marcel Bozzuffi
Claude Dauphin
Nicole Desailly
Denise Péron
Maurice Chevit
Jacques Dynam
Paul Pavel
Philippe Rouleau
André Valmy
Edmond Ardisson
José Artur
Maurice Auzel
Dominique Bernard
Lucien Desagneaux
Jean Droze
Charles Gérard
Georges Géret
Clément Harari
Jean Lefebvre
Serge Marquand
Albert Michel
Charles Millot
Paul Bernard
Jean-Pierre Périer-Pillu
Robert Sabatier
William Sabatier
Jacqueline Staup
Josée Steiner
Lionel Vitrant
André Weber
Dominique Zardi