The study explores episcopal heritage and the role of Barcelona Cathedral in the inquisitorial processes from 1488 until 1505, based on the manuscript Liber descriptionis reconsiliationisque, purgationis et condemmnationis hereticorum ALIAS de Gestis Hereticorum, written by the notary of the Barcelona Tribunal, Pere Miquel Carbonell i Soler. Hence, the aim of this paper is twofold. Its first objective is to elucidate the significance of the Barcelona Cathedral as a place where the solemnities of public auto da fé were performed, at which those earlier convicted by the Inquisition had their sentence determined; and second, it will consider examples of the episcopal Inquisition’s legacy and proof of its existence via examining the role of the bishop in the inquisitional processes for the period in question.