Holy Digital GrailMedieval books that survive today have been through a lot: singed by fire, mottled by mold, eaten by insects, annotated by readers, cut into fragments, or damaged through well intentioned preservation efforts. In this book, Michelle Warren tells the story of one such manuscriptan Arthurian romance with textual origins in twelfth century England now diffused across the twenty first century internet. This trajectory has been propelled by a succession of