Alain is the only son of a wealthy bourgeois couple. He takes violin lessons in Ménilmontant, where he is spotted by Fleur, a poor girl: she is going to kidnap him and demand a ransom from the young man's parents, money which will be used to pay for a good lawyer for her brother accused of killing a policeman.
as Fournier
as Fleur
as 'La Puce'
as Alain Leroy-Gomez
as Mrs. Leroy-Gomez
as Mr. Leroy-Gomez
as Fleur's mother
as Eliane Fournier
as Woman who went mad
as Young man
as Pierrot
as Julien
as Arpia
as Bourdieux
as Norma
as Blind man
as Dédé, chauffeur
as Man who shaves