
Having fortuitously discovered a photograph in which Marthe embraces someone unknown, Étienne Dorsay becomes jealous and imagines various stratagems to identify the lover. In the meantime, he and his friends acquire a weekend house for a very low price.
Etienne Dorsay

Daniel

Simon Messina, doctor

Boulifet, aka 'Bouly'

Marthe Dorsay, Étienne's wife

Mouchy Messina, Simon's possessive mother

Bernadette, designer collaborating with Étienne

Josy, Lucien's girlfriend

Marie-Ange, Bouly's ex-wife
Daisy, Bouly's fiancée

Delphine, Étienne's younger daughter

Madame Chalamand, Simon's lover

Stéphanie, Étienne's older daughter
Bully

Banoît, Marthe's lover

Bastien, stage director

Marie-Christine Bosquet, Daniel's director

Lucien

Mireille, Simon's girlfriend

Taxi driver

Bouly's secretary

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Skinny colleague / Waiter (uncredited)

Violinist at Mouchy's party (uncredited)

Radio news host (voice) (uncredited)
