The film was started in October 1941 with Jean Marais and Micheline Presle as "La clé des songes" but because of the war, the production shut down a few weeks later only to be resumed ten years later with a different cast.
*
The film is an adaptation of the play 'Juliette ou la Clef des Songes' written in 1927, which premiered in Paris in 1930 at 'Falconetti''s Théâtre de l'Atelier', directed by Alberto Cavalcanti