A father allows himself to be accused of the murder of a blackmailer to save his son who is the real murderer. But he is forced to confess, and commits suicide in his cell.

Also known as Lilac, this early Anatole Litvak-directed talkie was based on a play by Tristan Bernard and Charles Henry Hirsch. The story bears traces of the Bertold Brecht-Weill piece The Threepenny Opera, with heroine Lilac (Marcelle Romeo) consorting with the criminal scum of Paris. Lilac falls in love with a handsome detective (Andre Luguet), but he doesn't let his emotions stand in the way of his duty, and in the end he reluctantly turns her over to the authorities. At $120,000, Coeur de Lilas was one of the most expensive movies to come out of France in 1931, but it more than made back its cost at the box-office.

During a stay in Seville, Empress Eugénie was charmed by the song of Violetta, a flower girl of gypsy origin. She invites her to Paris where she becomes a prima donna.