 "Cárcel de amor" (Prison of Love, 1492) is the other sentimental novel that Diego de San Pedro is famous for and perhaps his most well-known work.This work was dedicated to Fernández de Córdoba, "alcaide de los donzeles".Like "Tractado de amores de Arnalte y Lucenda", "Cárcel de amor" is narrated by “el autor” and consists mainly of letters, monologues, and speeches in place of dialogue.