The villain at the heart of the contradictions of youth literature

On what terms have contemporary authors, heirs to a tradition of protecting young people, approached the figure of Evil since the publication of the first Harry Potter novel? Can their choice have repercussions on how a hero is constructed and question the relationship of youth-literature authors with their readership? These are the questions raised by works for young people by writers such as Valérie Dayre, Jean-Claude Mourlevat, and Patrick Ness, who each offer some answers.