Apres L'Amour (When Love is Over) was a literal, scene-for-scene adaptation of the popular stage play by Pierre Wolff and Henri Duvernois.
Victor Francen plays a wealthy historian who charms his way into the bedroom of impressionable young shopgirl
Gaby Morlay. Almost simultaneously, Francen's previously frigid wife has entered into an affair with another man. The upshot of all this as that the shopgirl and the wife become pregnant, delivering their babies at the very same time and at the very same hospital. The shopgirl dies in childbirth, whereupon Francen switches her baby (who, after all, is really his) with the one conceived illegitimately by his own wife. Six years later, the consequences of Francen's face-saving act in the maternity hospital finally catch up with him. ~ Hal Erickson, All Movie Guide