In this book, we address the work of the Public Defenders Office, an institution essential to the judicial function of the State, in the face of the portraits of an early conviction, through pre-trial detention, and the right to Legal Assistance. The analysis helps to clarify the reasons why the Public Defenders Office is slow in fulfilling its constitutional duty, the situation of pre-trial detainees in the face of the (non-)realization of the right to defense, the obstacles that corroborate the backlog of cases awaiting trial and shows that the constant obstacles of this reality go beyond the limits and possibilities of the Public Defenders Office, although this does not exclude its shortcomings. The work contributes to the reflections of professionals and scholars interested in the subject, as well as society in general.