How can violence in children and adolescents who have suffered various forms of helplessness be understood? Three leading mental health specialists seek to answer this question from their 25 years of experience. Brignoni, Esebbag and Grisales offer theoretical guidance and present some clinical cases that deserve to be shared. Likewise, they show how the approach to violence is not simply a technical challenge, since it supposes an ethic that implies a double commitment: that of the child or adolescent who must consent to a personal elaboration of their impasses and that of the professional who accompanies them. A book that proposes epistemic and methodological reflections of special interest for mental health professionals and students.