Prison libraries play an important role in expanding the educational and cultural possibilities of inmates, as well as providing more flexible encounters between books and readers. They offer opportunities of socialization beyond book loan. Complexity increases when we look into mobile libraries going places beyond prison school. In this paper we discuss the function of mobile libraries and the education of inmates on reading mediation, usually in adverse conditions, including hostility against books. For this we will focus on the particularities of reading mediation at evangelical pavilions. From our perspective, reading is always situated within specific social practices, built and rebuilt within social relationships. We are interested in the contradictions, limits and possibilities of literacy practices as a way of guaranteeing, in this type of contexts, the right to read.