Murder mystery involving a man and his relationship with twin sisters.

Jean-Claude Brialyas Paul Kastner
Stéphane Audranas Marie Kastner / Anne
Robert Hosseinas Jean Carouse
Michel Serraultas Le commissaire Plouvier / Superintendant
Catherine Spaakas Françoise
Claude Chabrolas Railway guard
Madeleine Damienas Une vieille dcommere
Paul Biscigliaas L'employe de Kastner