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.
as Etienne Dorsay
as Daniel
as Simon Messina, doctor
as Boulifet, aka 'Bouly'
as Marthe Dorsay, Étienne's wife
as Mouchy Messina, Simon's possessive mother
as Bernadette, designer collaborating with Étienne
as Josy, Lucien's girlfriend
as Marie-Ange, Bouly's ex-wife
as Daisy, Bouly's fiancée
as Delphine, Étienne's younger daughter
as Madame Chalamand, Simon's lover
as Stéphanie, Étienne's older daughter
as Bully
as Banoît, Marthe's lover
as Bastien, stage director
as Marie-Christine Bosquet, Daniel's director
as Lucien
as Mireille, Simon's girlfriend
as Taxi driver
as Bouly's secretary
as Skinny colleague / Waiter (uncredited)
as Violinist at Mouchy's party (uncredited)
as Radio news host (voice) (uncredited)
