It features an ensemble star cast including Fernandel, Pierre Brasseur Lilli Palmer, Danielle Darrieux, Jean Marais, Edwige Feuillère, Gérard Philipe and Sophie Desmarets.

[2] The screenplay was written by Sacha Guitry, his final work before his death the same year.

It was shot at the Billancourt Studios in Paris and on location in Nice including at the Hotel Negresco.

A celebrated writer has made a fortune by writing a successful book about four loving couples.

Many years later he considers leaving them money in his will and sends out researchers to find if they are still as happy at they once were.