The testimonial of Ofelia Domínguez Navarro called De 6 a 6: la vida de las prisiones cubanas (1937) and the novel San Lunes: panóptico en dos estaciones (2009) by Agnieska Hernández Díaz deal with the power relationships in depth inside the prison space. We will analyse these two literary works that are linked by the construction of the feminine as identity in this deforming and dehumanizing space that becomes a reflection of the external social space.