The French Secrets of a Ballerina is based on Honore de Balzac's Un Seul Amour. The title character is ballet-star Clara Biondi (Micheline Presle), whose peak years are shown in flashback. Clara finds herself victimized by blackmailer -- and former lover -- James de Poulet (Robert Vattier). As it turns out, she will do anything to keep her sordid past from husband Ger...