The book is about the emergence and spread of the miracle report about a supernaturally rapid decomposition of corpses at specific burial sites, so-called holy fields (Campus Sanctus). How is it that in the last third of the 13th century this belief appears at about the same time in the most diverse places in the Mediterranean? The aim of the study was to link the port cities of Acre and Pisa, both places with very early evidence of Holy Fields, with the place of origin of the belief, the Akeldama (blood field) in Jerusalem. With the help of detailed source studies and an interdisciplinary approach, it was possible to work out the circumstances and preconditions for the emergence of the miracle report. Building on the results and possible theses, the frescoes of the Camposanto in Pisa are subjected to a re-reading and in particular the death allegory attributed to Buonamico Buffalmacco is re-evaluated.