Greek hagiographical texts, specifically those about martyrs, most of which were written during the early and middle Byzantine periods, recount stories of Christian men and women who were arrested, interrogated, tortured, imprisoned, and executed by the Roman authorities for their refusal to offer sacrifice to pagan gods. Despite being one of the most popular literary genres among the Byzantines, many aspects of martyrdom narratives have yet to be thoroughly investigated. This lecture will focus on two interrelated aspects of these texts: the healing miracles performed or experienced by the saintly martyrs in their places of imprisonment before death, and the posthumous miracles that occur in the places of their former imprisonment but now turned places of worship. On a literary-narrative level, the martyrs’ prisons thus become cult and healing places for devotees both before and after the protagonists’ death. Archaeological evidence from late antiquity to the post-Byzantine period supports these literary records by providing specific examples of prison-shrines dedicated to martyr-saints. In sum, this lecture will demonstrate how saints’ prisons could also serve as healing shrines, as both manifest a space for contact with the divine and various miraculous healings within and outside the text.