In a television interview ("Vivement Dimanche Prochain", France 2, 17 April 2005) Brigitte Fossey, who played the little Paulette, revealed that the film had originally been shot as a short, and then it was later decided to extend it into a feature film. Unfortunately she had lost her milk teeth and Georges Poujouly (who plays the boy Michel) had had his hair cut to play in Nous sommes tous des assassins (1952). So, in many scenes of the movie Paulette has false teeth and Michel is wearing a wig.
The bridge seen in the first scenes is an old roman bridge that crossed the Verdon river near Aiguines (Var - France). This place is now unfortunately submerged by the waters of the Sainte-Croix lake.