Louis Velle as Dr. Didier Dancourt, surgeon

Claudine Auger as Sophie Gérard, journalist at Nice Matin

Juliette Mills as Lydia Valentin, Didier's fiancée

Michel Galabru as Leonardos, Greek billionaire

Stéphane Bouy as Canello Killer

Roger Hanin as Franck Canello, crook saved by Dr. Dancourt

Jacques Balutin as Night train controller

Jacques Legras as Night train chief

Philippe Dumat as Photographer of Sophie Gérard

Yves Barsacq as Police commissioner in Nice

Henri Attal as Wrongs rectifier in Nice

Dominique Zardi as Wrongs rectifier in Nice

Jean Valmence as Surgeon, colleague of Didier

Evelyne Dassas as Lydia's friend

Guy Delorme as Henchman of Canello

Robert Lombard as Homosexual on the night train and at the opening

Robert Party as Henchman of the Nantais

Lionel Vitrant as Henchman of Canello

Jean-Louis Tristan as Henchman of the Nantais

Jean Mylonas as Journalist at Nice Matin

Hans Verver as Editor-in-chief of Nice Matin

Hélène Manesse as Night train passenger