Some time after marrying a sensual girl, Pozdnychev realizes the only link to his spouse is that of physical love. When a violinist with whom his wife plays regularly the “Sonata to Kreutzer” appears, the young woman blooms in a new passion. From then on, her husband is eaten away by jealousy.

Jean-Claude Brialy
as Trukhacevskij

Éric Rohmer
as Poznyecev

Françoise Martinelli
as La Femme de Poznyecev

Jean-Luc Godard
as Ami Journaliste

André Bazin
as (uncredited)

Charles L. Bitsch
as (uncredited)

Claude Chabrol
as Cameo (uncredited)

Marc Laferrière
as (uncredited)

François Truffaut
as Cameo (uncredited)